这个实验室里有很多设备。

This lab has many ___devices.

他使用各种巧妙的手段说服了客户签下合同。

He employed clever ___devices to persuade the client to sign the contract.

作者使用了多种文学手法来增强故事的戏剧性。

The writer used various literary ___devices to heighten the drama of the story.