It’s not supposed to be easy. Anyone who finds it easy is stupid.

解析：事情做得成功了，就引身退去，这是自然的道理。

Quality and safety are the lifelines of aquatic products, we must strictly control quality.

The novel is a mirror that reflects the complexities of human nature and society.

你最不满意的顾客是你最大的学习来源。

成功是我唯一的选择，失败不是。