If many such chains were created in a differentially rotating galaxy, the distribution of stars would resemble the observed distribution in a spiral galaxy.
如果许多这样的链是在一个不同的旋转星系中产生的,那么恒星的分布将类似于在螺旋星系中观察到的分布。
The researchers say many, if not all,people likely have these antibodies but do not always produce or use them efficiently.
VOA: special.2009.03.04
It's an open question whether you'll believe it when this class comes to an end, but I'd be surprised if many of you believe it now.
即使到课程结束时,能否接受这个观点,依然是你们的自由,相反,你们要现在就能接受,倒是会让我感到很奇怪
So, seven asks us if we have any valence electrons left, and how many valence electrons do we have left?
那么,第七步问我们是否还有价电子剩下,我们剩下了几个价电子?
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