1943年,他接了第一个角色,在影片《双重保险》中扮演保镖。
In 1943, he received his first role as a heavy in "Double Indemnity."
他试图在电影中扮演一个完美的角色。
没有什么简单或单一的因素能决定一个给定的地点是否会成为热带草原,但部分因素似乎在热带草原的形成中扮演着重要的角色。
There is no simple or single factor that determines if a given site will be a savanna, but some factors seem to play important roles in their formation.
Because these things are unpaired, we have already seen how unpaired electrons play a role in the Stern-Gerlach experiment.
因为它们都是未成对的,我们已经发现,在Stern-Gerlach实验中,未成对电子扮演怎样一个角色了。
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