Concave lens
[化] 凹透镜\\n[医] 凹透镜, 近视镜片
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
lens
[lɛnz]
n. 透镜，镜头;眼睛中的水晶体;隐形眼镜;汽车的灯玻璃;
🗣️ 情景例句
going to the children's ward once or twice a week
每星期就去小儿科病房一、两次
How would 12:45 be?
12:45怎么样？
Your English is incredibble.
我真不敢相信你的英语。