莺花犹怕春光老，岂可教人枉度春。
黄莺和鲜花尚且担心春光流逝，怎么可以白白虚度大好时光？
I don't know where the limits are, but I would like to go there.
A strong brand is built on transparency and integrity.
The challenge with hepatitis C was not just to find the virus, but to understand how it evades the immune system.
我不是来告诉你怎么想，我是来告诉你要思考。
某种无形力量的可怕阴影，虽不可见，却在我们中间漂浮。