常見例句雙語例句The earthworm is a useful animal.蚯蚓是一種有用的動物。www.0-100.comAn ox is a useful animal.公牛是一個有用的動物。Monkey is a kind of useful animal .猴子是一種有用的動物。權(quán)威例句It's less useful, of course, for people who made their teeth before bomb testing started in 1955, and it will become ever less useful as more of the bomb carbon is absorbed by oceans and plant and animal life.FORBES: Magazine Article 返回 useful animal