我不数我的仰卧起坐。只有当它开始疼的时候,我才开始数。
I don't count my sit-ups. I only start counting when it starts hurting.
The best buildings are those that disappear into the landscape.
燕子飞来时正值春社,梨花凋落后便是清明时节。
In mathematics, you don't understand things. You just get used to them.