他的鞋子是用几段旧带子系的.His shoes were tied on with old bits of string.我们系的学生总共有几百人.The students of our department numbered in the hundreds.“ 你真该瞧瞧他系的那条领带." You ought to have seen the tie he had on....

“系的”的英语可以翻译为：[医] systematic ...