一旦海洋板块开始下沉，它就会受到另一种力量——板块拉力的影响。

Once the ocean plate begins to sink, it would be affected by another force—slab pull.

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另一种力量是成为欧盟成员的前景(参见此文)。

The other is the prospect of EU membership (see article).

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我亲爱的罗瑞，过度劳累是否就那么容易，我表示怀疑。有一种压力往一个方向拉，就得有另一种力量去对消它。

My dear Lorry, I doubt if that could easily be. There has been a violent stress in one direction, and it needs a counterweight.

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