But they still need to meet strict safety criteria before moving on.
但在继续前进之前,他们仍然需要满足严格的安全标准。
单词 | safety criterion |
例句 |
原声例句
TED-Ed(视频版) But they still need to meet strict safety criteria before moving on. 但在继续前进之前,他们仍然需要满足严格的安全标准。 |
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