P-
[医] 对[位](化学)
🗣️ 情景例句
If it ain't broke, don't fix it.
东西还没坏，就别急去修它。
An empty hand is no lure for a hawk.
空手诱不来老鹰。
No problem! Tell me, do I have to take them before or after meals?
“那不难！告诉我，我是在饭前还是饭后吃呢？”