直至的用法和样例：
例句
-
我们不断进行实验，直至将所需颜色调配成功。
We experimented until we succeeded in mixing the right colour. -
沿路前行直至有交通灯处。
Go down the road till you reach the traffic lights. -
警方封锁了这个区域直至拆除炸弹的引信为止。
Police cordoned off the area until the bomb was defused. -
他窥探著四周，直至见到警察走开。
He skulked around outside until the police had gone.
