单词：biological half life
biological half life的用法和样例：
例句
- The time required for half the quantity of a drug or other substance deposited in a living organism to be metabolized or eliminated by normal biological processes.生物半衰期，存储在活的有机体内的药物或其它物质经新陈代谢或被正常的生理活动消失一半所需要的时间。
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