He could fall off and break a leg or arm.

VOA: special.2009.01.14

He'd had a very royal accident, he'd broken his leg falling off a horse, and he had a terrible limp.

他出了一场只有王室贵族才会出的事故,从马上摔下来,断了一条腿,腿瘸得很厉害

耶鲁公开课 - 1871年后的法国课程节选

People are always losing a wooden leg and having parts of their limbs fall off.

人们不是丢失了一条木腿,就是缺胳膊少腿的。

耶鲁公开课 - 1945年后的美国小说课程节选