Retracted nipple
[医] 乳头内缩
🧩 词语组成解析
retracted
[[ri'træktid]]
a. 可伸缩的
nipple
['nipl]
n. 乳头;<美>（奶品的）橡皮奶头;（枪炮的）火门;[机]喷灯喷嘴，螺纹接套;
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
A wilful fault has no excuse and deserves no pardon.
不能宽恕故意犯下的错误。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。