A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则,如果在一年内符合各种使用规定,就可更换。
Parents would be greatly surprised and deeply touched if they realized how much belief their children usually have in their character and infallibility,
那么家长会大为吃惊和深受感动的,如果家长意识到孩子们通常是多么相信家长的品行和绝对正确,