as tough as old boots
美
英
- 网络非常坚强
un. | 1. extremely strong and healthy 2. very strong and able to deal with difficult situations or pain easily |
| 单词 | as tough as old boots | ||
| 释义 | as tough as old boots美 英
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英汉词典包含292483条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。