Tooth enamel
[醫]牙釉質
?? 詞語組成解析
tooth
[tu:θ]
n. 牙;齒;齒狀部份;
vt. 給…裝齒;
vi. 嚙合;
enamel
[i'n?m?l]
n. 搪瓷;琺瑯;指甲油;
vt. 給…上琺瑯;在…涂瓷漆;
??? 情景例句
I couldn't have said it better.
我想說的也是這個意思。
Don't underestimate the difficulties of the work.
不要低估了這項工作的限巨性。
This increases their air-resistance and reduces the shock of impact when they hit the ground.
這樣就加大了空氣阻力，并減少了它們著地時沖擊力帶來的震動。