那些善于学习的人们，应当能够求得其学习的甚解，了解之所以这样的缘故，不应当只求得背诵文章，看看便可以了。

The ethical issues surrounding IVF are complex, but the desire to have a child is a fundamental human right.

做好事如同背负重物而登山，志向虽已确立，但总是担心力不从心；干坏事如同骑马下山，虽然未加鞭，但却欲驻足而难以自禁。

Collaboration between industry, scientists and policymakers is key to solving marine conservation challenges.

Some birds are not close, because they are too bright.