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1·They had suffered a lot of nervous strain and shock.

他们经受了许多神经紧张和震扰。

2·I found that the less I cared whether I spoke well or badly, the less badly I spoke, and gradually the nervous strain diminished almost to a vanishing point.

就这样我发现，我越是不在乎自己讲的如何，我的表现就越好，极度紧张的感觉也渐渐消失了。

3·Rhythm not only only is from nervous and flabby composing, also from depend on to save mutually of strain and flabby composing.

节奏不仅仅是由紧张和松弛构成，同时也由相互依存的紧张和松弛构成。