tightens

过去分词：

动词过去分词: tightened

更多词形：

名词: tightener | 动词过去式: tightened | 动词过去分词: tightened | 动词现在分词: tightening | 动词第三人称单数: tightens |

单词例句：

One set of provisions tightens emission standards.

一套使排放标准更加严格的规定。

We would better tighten up the ropes a bit .

我们最好把绳子拉紧一点。

He said he would take steps to tighten up the law.

他说他将采取措施使法律更严格有效。

Insert and tighten Phillips head screw.

插入和旋紧十字槽头螺丝。

We must tighten these screws.

我们必须把这些螺钉旋紧。

Install relief valve cover nut and tighten.

安装安全阀阀盖螺母,并加以紧固。

The reality of the situation hit me and I felt my stomach tighten.

面对现实，我顿时觉得胃部发紧。

He tried to tighten his belt after he lost his job.

他失业後,想办法省吃俭用。

We must tighten up our management policies.

我们必须强化我们的经营方针。