Dental arch
[醫] 牙弓, 齒弓
?? 詞語組成解析
dental
['dentl]
adj. 牙齒的;牙科的;（輔音）齒音的;
n. 齒音;
arch
[ɑ:t?]
n. 弓形;拱門;拱形物;足弓，齒弓;
vt. （使）彎成拱形;用拱連接;向后彎;
vi. 拱起;成為弓形;
adj. 主要的;首要的;調皮的;淘氣的;
??? 情景例句
Four will be good.
4只應該夠。
What is that to you?
那對你算什么？
Sandy was so sick that she threw up all over the bathroom floor.
三滴病了，吐了洗手間一地。