noun 下载 🔗分享 流明 In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm. Examples : "The new light bulb in the kitchen is much brighter; it emits 800 lumens. " 厨房里新换的灯泡亮多了，能发出800流明的光。 physics energy unit science 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 管腔，内腔 The cavity or channel within a tube or tubular organ. Examples : "The doctor examined the lumens of the patient's intestines to look for any blockages. " 医生检查了病人肠道的管腔，想看看有没有堵塞。 anatomy organ physiology medicine biology 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 细胞腔，胞腔。 The cavity bounded by a plant cell wall. Examples : "Under a microscope, the lumens of the plant cells looked like tiny empty compartments. " 在显微镜下，植物细胞的胞腔看起来像一个个微小的空房间。 plant biology part 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 管腔，内腔 The bore of a tube such as a hollow needle or catheter. Examples : "The doctor checked the lumens of the IV catheter to make sure they weren't blocked. " 医生检查了静脉输液导管的管腔，确保它们没有堵塞。 medicine anatomy part technical device 与AI对话词汇游戏阅读练习
