Gum boil
[医] 龈脓肿
🧩 词语组成解析
gum
[ɡʌm]
n. 口香糖;树胶;黏胶;牙龈;
vt.& vi. 胶合;涂以树胶;使…有粘性;
boil
[bɔɪl]
n. 煮沸，沸腾;疔，疖子;[医]疡肿，脓肿;
vt.& vi. （使）沸腾，开;
vt. 用开水煮，在沸水中煮;
vi. 怒火中烧，异常气愤;
🗣️ 情景例句
Robbie put that there.
这是Robbie弄的。
He lived in California until he was seventeen.
他生活在加利福尼亚直到他十七岁。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。