Nonradioactive
n. 非放射性
🗣️ 情景例句
I maintain that the most important thing is having good friends.
我认为最重要的是有好朋友。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
Fortunately, however, ancient men made tools of stone, especially flint,
然而， 幸运的是，远古人用石头制作了工具，特别是用燧石，