当暴露在空气中时，不锈钢就自动钝化。
When exposed in air, stainless steels passivate naturally (due to the presence of chromium).
像大多数其他的抗氧化剂，绿色的茶多酚是氧化和失去他们的活动，当暴露在空气中。
Like most other antioxidants, green tea polyphenols are oxidized and lose their activity when exposed to air.
在其中一个控制过程中，当雏鸡暴露在空气中时，母鸡的心跳加快，眼睛温度降低。
During one of the controlled procedures, when the chicks were exposed to a puff of air, the hens' hearts rate increased and eye temperature decreased.
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