The activity of immunocyte would be inhibited for the lack of selenium, while addition of selenium with proper dose could improve immune function dramatically.

当动物缺硒时，机体的免疫受到抑制，补充合适剂量的硒后，动物的免疫机能又得到改善。

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This addition allows class designers to retain control over the internals of their classes while expressing to the client of the class what he should or should not touch.

这个新特性使类设计人员可以保证对类的内在特性的控制，同时告诉类的使用者哪些类可以而哪些类不可以触及。

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We don't know if the decrease in fatigue and depressive symptoms is due to the removal of something bad while in work or the addition of something good while in retirement.

我们不清楚疲劳和抑郁症状的减少是因为去除了工作中的一些不好的事情还是退休后增加了了好的事情。

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In addition, while 59% of Airbnb hosts are employed full-time, about 20% are freelancers, 12% are employed part-time and 7% are unemployed.

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Wireless connections have been around for a while on cameras, but the addition of Android means the camera can tether to a smartphone or tablet running Android when there's no Wi-Fi network handy.

CNN: Nikon's latest camera runs Android

It is the only pure Irish pot still whiskey available in the U.S. Unlike the vast majority of Irish whiskies, it is entirely made from malted and malted barley, while almost all other have the addition of grain-whiskey, one of the same key differentiators between single malt and blended whiskies.

FORBES: My Favorite Irish Whiskey Is Back - And Better Than Ever