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half life的英文翻译是什么意思，词典释义与在线翻译：
英英释义
Noun:
-
the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
half life的用法和样例：
例句
- He's been lucky all his life and has never had to find out how the other half lives.
他享了一辈子的福，从来不知道穷人生活的滋味。
