It is free of charge 那是免费赠送的 ; 免费的
It is particularly worrying that nobody seems to be in charge.
特别令人担忧的是,似乎没有任何人在负责。
Send it to whoever is in charge of sales.
把这寄给负责销售的人。
The "flywheel" battery, it is said, could power an electric car for 600 miles on a single charge.
据说,“飞轮”电池每充电一次可驱动一辆电动汽车行驶600英里。
It doesn't have to put federal bureaucrats in charge of what procedure is covered and what medication is not."
VOA: standard.2009.09.05
So, if we compare the sulfur to the oxygen, the oxygen it turns out is more electronegative and that is what holds the negative charge in this molecule.
因此,如果我们来比一下硫和氧,氧应该有更高的电负性,而在这个分子中它确实有负的电荷。
And let's say our second electron now is really far away, such that it's actually not going to shield any of the nuclear charge at all from that first electron.
距离原子核非常非常近,我们说第二个电子处于非常远的位置,这样它不会对第一个电子,感受到的来自原子核的电荷量有任何屏蔽作用,我们最后要说的是。
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