Sargassan
马尾藻多糖
🗣️ 情景例句
She complained, with reason, that she had been underpaid.
她抱怨她的工资一直很低，这也不无道理。
No. I went to California for a few weeks.
没有。我上加利福尼亚去了几个星期。
I'm very sorry. I borrowed a book from the library two weeks ago.
“很对不起。两周前我从图书馆借了一本书。