what_causes_them_有道手机词典

1.Scientists are constantly studying the smaller, more common avalanches, to try to understand what causes them.
科学家们一直在研究更小的、更常见的雪崩，试图了解是什么导致这些雪崩。
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2.What causes them to become addicted?
是什么使他们上瘾了呢？
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3.What is an earthquake and what causes them to happen?
什么是地震，造成地震发生的原因是什么？
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