慢速英语:Small Businesses in US Struggle to Find Workers

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1.operate vt.操作; 经营; 运转
例句：The doctors decided to operate on the patient once.
医生们决定立刻动手术。

2.approve vt.赞成，同意
例句：Not everyone approves of the festival
不是所有人都赞成庆祝该节日。

3.change vt.改变，变更; 交换
例句：These legends should never change.
这些图例不应该变化。

4.expand vt.扩张; 使…变大; 详述
例句：Engineers noticed that the pipes were not expanding as expected
工程师注意到管道并没有如预期那样膨胀。

5.propose vt.求婚; 提议，建议
例句：Britain is about to propose changes to some institutions
英国将提议对一些机构进行改革。