The use of anesthetics is less than a hundred years old.

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The use of anesthetics is less than a hundred years old.

The use of anesthetics is less than a hundred years old.
The use of anesthetics is less than a hundred years old.

The use of anesthetics is less than a hundred years old.
麻醉剂的使用历史不超过100年

麻醉剂的使用是最近一百年的事情。
要到是翻译么?
^0^