Ppb
[化] 十亿分率
🗣️ 情景例句
with Mr. Levine?
与Levine先生的邀约？
They fought for the sake of their country.
他们为国而战。
In many ways, this is unfortunate for the poor actors who are required to go on repeating the same lines night after night.
这样一来，可怜的演员们可倒霉了。因为他们需要一夜连着一夜地重复同样的台词。