noun🔗Share寝ている人, 眠り人Someone who sleeps."My little brother is a very deep sleeper. "私の弟はとてもよく眠る人です。personhumanChat with AIVocabulary GamePractice Reading
noun🔗Share休眠法, 潜伏法That which lies dormant, as a law."The new student's quiet demeanor made her a sleeper in the debate club; her powerful arguments weren't apparent until the later rounds. "新入生の静かな物腰は、彼女をディベートクラブの休眠法にした。彼女の強力な議論は、後のラウンドまで明らかにならなかった。politicslawgovernmentChat with AIVocabulary GamePractice Reading
noun🔗Share潜伏工作員A spy, saboteur, or terrorist who lives unobtrusively in a community until activated by a prearranged signal; may be part of a sleeper cell."For years, the friendly neighbor was just Mr. Henderson, but after receiving a coded message, he was revealed to be a sleeper activated to disrupt the city's power grid. "長年、その親切な隣人は単なるヘンダーソン氏でしたが、暗号化されたメッセージを受け取った後、彼は都市の電力網を混乱させるために起動された潜伏工作員であることが明らかになりました。politicsmilitarypersonwargrouporganizationactionpolicegovernmentnationChat with AIVocabulary GamePractice Reading
noun🔗Shareピアスホールを塞がないように着ける小さなピアスA small starter earring, worn to prevent a piercing from closing."My daughter lost her earring, so she wore a sleeper to keep her piercing open. "娘はピアスをなくしたので、ピアスホールを塞がないように着ける小さなピアスをして、穴を維持しました。appearancewearbodyitemChat with AIVocabulary GamePractice Reading
noun🔗Share寝台車A railway sleeping car."We spent a night on an uncomfortable sleeper between Athens and Vienna."アテネとウィーンの間で、不快な寝台車で一晩過ごしました。vehicleChat with AIVocabulary GamePractice Reading
noun🔗ShareスリーパーホールドA sleeper hold."The wrestler used a sleeper hold to subdue his opponent. "レスラーは相手を制するためにスリーパーホールドを使った。sportactionbodymedicineChat with AIVocabulary GamePractice Reading
noun🔗Share伏兵, 大穴Something that achieves unexpected success after an interval of time."A box-office bomb when it first came out, the film was a sleeper, becoming much more popular decades after being released."公開当初は興行的に失敗したが、この映画は何十年も経ってから大穴となり、ずっと人気が出た。achievementbusinessoutcomeChat with AIVocabulary GamePractice Reading
noun🔗Shareハゼ科の淡水魚A goby-like bottom-feeding freshwater fish of the family Odontobutidae."The aquarium keeper carefully added a small sleeper fish to the community tank. "水族館の飼育係は、小さなハゼ科の淡水魚をコミュニティタンクに慎重に加えました。fishanimalChat with AIVocabulary GamePractice Reading
noun🔗ShareナースシャークA nurse shark (family Ginglymostomatidae)."The marine biologist studied the sleeper shark in the aquarium. "海洋生物学者は水族館でナースシャークを研究しました。fishanimalChat with AIVocabulary GamePractice Reading
noun🔗ShareパジャマA type of pajama for a person, especially a child, that covers the whole body, including the feet."Aaron, Devin, and Laura looked so comfy in their sleepers."アーロン、デビン、そしてローラはパジャマを着てとても快適そうだった。wearitemfamilyhumanChat with AIVocabulary GamePractice Reading
noun🔗Shareドラッグレースで対戦相手を欺いたり、警察の注意を避けるために、外観はほぼノーマルのまま内部を過剰に改造した自動車An automobile which has been internally modified to excess, while retaining a mostly stock appearance in order to fool opponents in a drag race, or to avoid the attention of the police."The sleek, black car was a sleeper; it looked like a normal family sedan, but under the hood was a powerful engine. "その洗練された黒い車はスリーパーだった。普通のファミリーセダンに見えたが、ボンネットの下には強力なエンジンが搭載されていた。vehicleracepolicetechnologysportmachineChat with AIVocabulary GamePractice Reading
noun🔗Share睡眠薬A sedative."The doctor prescribed a sleeper to help Mrs. Jones sleep through the night. "医者はジョーンズ夫人が夜通し眠れるように睡眠薬を処方しました。medicineChat with AIVocabulary GamePractice Reading
verb🔗Share子牛の耳を切り、印をつけるTo mark a calf by cutting its ear."The rancher decided to sleeper the newly born calf so he could easily identify it later. "牧場主は、後で簡単に識別できるように、生まれたばかりの子牛の耳を切り、印をつけることにしました。animalagriculturemarkChat with AIVocabulary GamePractice Reading
noun🔗Share枕木A railroad tie."The train rumbled loudly as it passed over each sleeper beneath the tracks. "列車は線路の下の各枕木の上を通過する際に、大きな音を立てて揺れました。materialbuildingstructuretechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share根太A structural beam in a floor running perpendicular to both the joists beneath and floorboards above."The construction worker carefully positioned the sleeper on the joists before attaching the floorboards. "建設作業員は、床板を取り付ける前に、根太を大引きの上に慎重に配置しました。architecturebuildingstructurematerialChat with AIVocabulary GamePractice Reading
noun🔗Share船底材、根太A heavy floor timber in a ship's bottom."The shipwright carefully inspected each sleeper in the hull to ensure the ship's structural integrity. "船大工は、船の構造的完全性を確保するために、船体の各船底材を注意深く検査しました。nauticalpartmaterialbuildingChat with AIVocabulary GamePractice Reading
noun🔗Share樽の一番下の段The lowest, or bottom, tier of casks."The warehouse workers carefully checked the sleeper, ensuring the stack of barrels wouldn't collapse. "倉庫の作業員は、樽の山が崩れないように、樽の一番下の段を注意深く確認しました。nauticalstructureChat with AIVocabulary GamePractice Reading
