羊有跪乳之恩,鸦有反哺之义。
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 market is always right, and it doesn't care about your opinion.
Quality is remembered long after price is forgotten.
数学的真正力量不在于它的复杂性,而在于它的简洁和优雅。
"Experience is simply the name we give our mistakes."