Cavity preparation
[医] 洞制[备]法
🧩 词语组成解析
🗣️ 情景例句
I just don't know what to say.
我真不知该说什么好。
The industrial area is centered largely in the north.
那里的工业区大部分集中在北部。
the famous clock which can be heard all over the world on the B.B.C.
即那座从英国广播公司的广播中全世界都可以听到它的声音的著名大钟。