You will learn more about white blood cells when learning about disease and how our body defines itself against pathogens.

当你学习疾病以及我们的身体如何定义自己来对抗病原体时，你会学到更多关于白细胞的知识。

" You look like the effigy of a young knight asleep on his tomb, " she said, carefully tracing the well-cut profile defined against the dark stone.

“你看起来就像一个年轻骑士的雕像在他的坟墓上沉睡，”她说，仔细地描绘着深色石头上轮廓分明的轮廓。

If you're defined against Joe Biden that's a good thing in a Republican primary, but I also think that history has shown that when you attack Donald Trump, he attacks back pretty hard.

如果你被视为乔·拜登的对手，这在共和党初选中是件好事，但我也认为，历史表明，当你攻击唐纳德·特朗普时，他会进行相当猛烈的反击。

Crouching down in a corner, peeping up the lane, the next object that Young Jerry saw, was the form of his honoured parent, pretty well defined against a watery and clouded moon, nimbly scaling an iron gate.

小杰瑞蹲在一个角落里，往巷子里往上看，接下来看到的是他尊贵的父母的身影，在水月和阴云的映衬下，轮廓分明，敏捷地攀登铁门。