Employees shall frequently change their protective clothing.

员工应当常换防护服。

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This company has thousands of part types, which frequently change.

该公司拥有数千个部件类型，它们常常改变。

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It is not a bad habit for a driver to frequently change lanes.

驾驶人频繁变更车道不属于驾驶陋习。

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That's particularly difficult when you are selling to the armed forces, which frequently change their mind about specifications.

ECONOMIST: BAE Systems

Technologies frequently change, but a great brand goes on and on.

ECONOMIST: High-tech brands

Set up your schedule so that you frequently change locations.

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