| 单词 | once before |
| 释义 | once before WordReference English-Chinese Dictionary © 2019:主要翻译英语中文once before advadverb: Describes a verb, adjective, adverb, or clause--for example, "come quickly," "very rare," "happening now," "fall down." (on one previous occasion)曾经，有一次 |
| 随便看 |
英汉汉英词典包含3953260条英汉及汉英翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。