Arcus dentalis
[医] 牙弓, 齿弓
🧩 词语组成解析
[医] 弓
🗣️ 情景例句
I grew up in Beijing, but I was in Los Angeles for two years.
我在北京长大，不过在洛杉矶已呆了两年。
A kite will never be a good hawk.
鸢永不会变成隼。
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，