短语讲解：

1. Western countries placed sanctions on Russia because of its 2014 takeover of Crimea.

because of 因为，由于
例句：He is feeling wretched today because of the rain.
因为下雨，他今天情绪很不好。

2. The number of Russians below subsistence poverty rose to more than 20 million last year from 18 million a year earlier.

more than 超过; 不只是
例句：True friendship is worth more than money.
真正的友谊比金钱更有价值。

3. About half of Russia’s budget depends on oil export revenues.

depend on 依赖; 相信; 信赖
例句：Can I depend on you?
我可以信任你吗？

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