fiftynum.五十
Fifty and ten is sixty.五十加上十是六十。
fifty percent lethal time半数致死时间
fifty dollars in the hole亏空五十元
Fifty pence worth of trouble孩子们总是喜欢得到一些零花钱。
fifty-fifty adv. coll.扭抉把抉志扶批;
Fifty dollars is our limit.50美元是我们的底限了。
Fifty seven dollar per night.一个晚是57美元。
fifty-six-pound weight throw56磅链球掷远
Fifty dollars will suffice me.美元足够我用。
Fifty Years of Discourse Analysis话语分析五十年:回顾与展望