羊羔有跪下接受母乳的感恩举动,小乌鸦有衔食喂母鸦的情义。
The hardest decisions often require the simplest question: 'What's right for the long term?'
我们必须投资研究,使水产养殖更高效,对海洋生态系统的影响更小。
The most thought-provoking thing in our thought-provoking time is that we are still not thinking.