全球协作是解决当今能源领域面临的复杂挑战的关键。

The future of food security lies beneath the waves.

The problem with words is that you never know whose mouths they have been in.

解释：大部分茶都是寒性的，而绿茶却是温性的，体现了茶性质的差异。

统计学家不能逃避责任，必须清楚地理解科学推断的原则。