hards的用法和樣例：
例句
- I'd like to take this opportunity to thank everyone for their hard work on the project.
我愿借此機會(huì )感謝每一位為這個(gè)項目辛勤工作的人。 - He had a hard time selling his car, but he finally nailed down the sale when he got his friend John to give him$500.
他原先賣(mài)不掉他的汽車(chē)，但他的朋友約翰給了他500美元，終于把這宗買(mǎi)賣(mài)定了下來(lái)。
