useful是什么意思

实用例句

1. In business a poker face can be very useful.

生意场上，不动声色会非常有用。来自柯林斯例句

2. "For heaven's sake!" Dot expostulated. "They're cheap and they're useful."

“拜托！”多特反驳道，“它们又便宜又管用。”来自柯林斯例句

3. HDTV is especially useful if there are a lot of special effects.

有很多特效的时候，高清电视就格外有用了。来自柯林斯例句

4. The hinged seat lifts up to reveal a useful storage space.

把用铰链连接的座位抬起来后，就会发现下面有一个实用的储物空间。来自柯林斯例句

5. Pain-killers are very useful in small amounts to bring your temperature down.

小剂量的止痛药对于降低体温非常有用。来自柯林斯例句