noun🔗Share潮目、潮位線A line (of seaweed or differently coloured sand etc) on the shore showing the level of high or low tide"After the storm, a dark tidemark of seaweed showed how high the waves had reached on the beach. "嵐の後、海藻の暗い潮目が、波が浜辺でどれだけ高くまで達したかを示していました。environmentgeographygeologynatureoceannauticalplaceweatherChat with AIVocabulary GamePractice Reading
noun🔗Share痕跡、境界線(by extension) any mark showing the limit of some past activity"The stack of unread emails on my boss's desk formed a clear tidemark of how busy he'd been last week. "上司の机の未読メールの山は、先週彼がどれだけ忙しかったかの明確な境界線を示していた。markpasthistoryChat with AIVocabulary GamePractice Reading
noun🔗Share水垢の線、水垢A line of scum left on a bath tub when the water is drained away"After my long bath, a dirty tidemark was left around the tub. "長い入浴の後、浴槽の周りに汚い水垢の線が残っていました。appearanceutilityenvironmentmarkChat with AIVocabulary GamePractice Reading
