I have one bike but he has two.
我有一辆自行车,但他有两辆。
He has swum for two hours in the water, but he isn't tired.
他已经在水里游了两个小时了,但他还不累。
Li planted two mu of broad beans last autumn, but he has seen no yield because of the drought.
去年秋天,小李种了两亩蚕豆,但由于干旱颗粒无收。
But he still has two years with the National Guard.
VOA: special.2011.07.08
He has two electrons here with the same set of quantum numbers. B but these are two separate hydrogen atoms.
因为我写了两个量子数,一样的电子,但这是在两个不同原子中啊。
He has not one, not two but three coats on as well as two scarves.
不是一件,也不是两件,他一共穿了三件外套,围了两条围巾。
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