Optional charge
[经] 选择港费用
🧩 词语组成解析
🗣️ 情景例句
OK. Do you know when you'll come and visit?
好啊。你知道几时还会再来拜访我们吗？
Never swap (or swop) horses while crossing the stream.
骑渡中流莫换马。（指危难时不宜做大变动）
However, size and strength are not the only important things about this bridge.
然而，这座桥重要特点不仅是它的规模与强度。