vi.松开,解开;被解开(或解下);
vt.解除,使自由;解决;使解脱;
例句:
Peter untied his shoelaces.
彼得解开鞋带。
My brother, quite a troublemaker as a juvenile, can tie and untie any knot.
我哥哥在少年时经常惹事生非, 但他打结解结是把好手.
Untie the prisoners; let them go free!
释放这些囚犯, 让他们自由!