Tooth bulb
[医] 牙胚, 牙蕾
🧩 词语组成解析
tooth
[tu:θ]
n. 牙;齿;齿状部份;
vt. 给…装齿;
vi. 啮合;
bulb
[bʌlb]
n. 球茎，块茎植物;电灯泡;[解剖学]肿块;
🗣️ 情景例句
I heard you cheated on your exams.
我听说你考试作弊了。
It is never too late to learn.
什么时候学习都不晚。
The situation seemed hopeless and he knew his life was in danger.
这种情况看来是毫无希望了，他知道他有生命危险。