艱苦的, 費(fèi)勁的, 勤勞的

• His books are written in a laborious style.
• 他寫書文筆艱澀欧洲性爱免费三级片。

• Ants and bees are laborious insects.
• 螞蟻與蜜蜂是勤勞的昆蟲。

• Checking all the names was a slow, laborious job.
• 核對(duì)全部名字是件既慢又費(fèi)勁的事91免费高清国产自产拍。