Wisdom tooth
智齿
📖 牛津释义
wisdom tooth
any of the four molars at the back of the mouth that appear when one is about 20 years old 智牙.
🧩 词语组成解析
tooth
[tu:θ]
n. 牙;齿;齿状部份;
vt. 给…装齿;
vi. 啮合;
🗣️ 情景例句
I fell out of the boat!
我摔到船外去了。
They intend to stop all traffic through the ports.
他们预定关闭港口的全部交通。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。