Epitetracycline
差向四环素
🗣️ 情景例句
International travel involves a lot of waiting around in airports.
经常在机场等候是环球旅行的一部分。
He hasn't done any worthwhile work in five years.
这五年来他没做过一件正经事。
'I find it beautiful,' I said.
“我觉得它好看，”我说，