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a generation ago
约三十年以前; 一代人以前
A generation ago genetic codes were certainly unknown.
遗传密码在上一代确实很少有人知道。
This happened a generation ago.
这件事发生在30年前。
网络词典
a generation ago
英 Unknown
美 Unknown
Unknown
中文翻译:Unknown
同义词:
Unknown
例句:
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