Postal rates
[经] 邮费
🧩 词语组成解析
n. 比率；价格；等级（rate的复数形式）
🗣️ 情景例句
Let me know by the end of the week.
这个周末前给我回音。
This stain is really stubborn.
这污垢去不掉。
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。