过去是一个陌生的国度；他们在那里做事的方式不同。
The past is a foreign country; they do things differently there.
It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.
"Keep smiling, it makes people wonder what you've been up to."
Overfishing is a theft from future generations.
We stand at the threshold of a new era in biology.
我不喜欢结局皆大欢喜的小说，这种小说让我沮丧不已。