| 词组 | tighten |
| 释义 | 下面几个句子都可以说，第一种说法的使用频率最高，第二种其次: The state government is tightening the laws. The state government is tightening up the laws. The state government is tightening up on the laws. |
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英语用法大全包含3679条英语用法指南，基本涵盖了全部常用英文词汇及语法点的翻译及用法，是英语学习的有利工具。