VOA慢速英语:Looking to Webb Telescope on Hubble 25th Anniversary

1. operate vt. 运转; 操作; 经营
例句：This medicine will operate quickly.
这药见效快。

2. examine vt. 检查
例句：It is most risky to go and examine an active volcano.
去探察活火山是非常危险的。

3. observe vt. 观察
例句：As a child, he liked to observe the behaviour of insects.
他小时候喜欢观察昆虫的习性。

4. avoid vt. 逃避
例句：Let us avoid false expectations.
让我们避免不切实际的想法。

5. discern vt. 辨识，分清
例句：Some people find it difficult to discern blue from green.
有些人难以鉴别蓝绿两种颜色。

6. estimate vt. 评估，估量
例句：You estimate his intellect too highly.
你把他的智力评估得太高。