慢速英语:North Korea Says It Tested Hydrogen Bomb

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短语讲解：

1. If it was a nuclear test, an analyst from Korea Defense Network says, it was more powerful than previous tests based on the seismic activity it produced.

base on 使建立在…基础上
例句：Processing of seismic data is base on stack.
地震资料处理是以叠加方法为基础的。

2. If North Korea’s claim turns out to be true, it will have been the second nuclear test under Kim’s leadership.

turn out 关掉; 结果是; 制造;
例句：Be calm and sit tight and everything will turn out well.
保持镇静，听其自然，一切都会好转。