For extra effect, the pop star added a laser display to his act.

为了取得额外的效果，这位流行歌星对其表演增加了激光显示。

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You could even follow it up with, "I'd rather say no now than I'm sorry later, " for extra effect.

为了有更好的效果，你还可以这样补充：“我宁愿现在拒绝也不希望之后有负于你”。

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When someone puts in the extra effort to package their work for others, then there is a fantastic network effect that lifts the entire community.

当有人付出了一些额外的努力，将他们自己的成果打包带给其他人时，接 着就会出现一个非常神奇的网络效应，把整个社区都带动起来。

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In effect, they are the contracts the Treasury demands in return for extra cash.

BBC: NEWS | UK | Education | A bonfire of school targets?

That way, the spirits are extra-cold when served, and there is less need for ice, which can have a diluting effect.

WSJ: The Home Bar, Only Better