1.I'll come right out and say it. This is the only legitimate excuse I can think of.
我将坦率地说这是唯一我能想到的正当的理由。
2.But a 16-month layoff because of foot surgery is a legitimate excuse for not playing well.
但如果打得不好，因脚部手术离开赛场16个月可以算作一个合理的借口。
3.Did he have a legitimate excuse for being late?
他迟到有个合理的解释吗？