B.a.g.
[医] 颊轴龈的
🗣️ 情景例句
Can you finish the work by five o'clock tomorrow?
你能在明天五点钟之前做完这项工作吗？
A plant may produce new flowers; man is young but once.
花有重开日，人无再少年。
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。