Y: We'd better hurry. They're boarding already.
X: OK. Let's go. But which way is Gate 20?
Y: Oh, here comes a man. Let's ask him...Excuse me. Can you direct me to Gate 20, please?
Z: Sure. Go down the stairs right over there and you'll see some directions. Just follow them.
Y:我们最好快一点,大家已在登机了。
X:好,那就走吧。但二十号登机门是在哪儿呢?
Y:哦,前面来了一个人,我们问问他吧。……对不起,请问二十号登机门怎么走?
Z:当然。顺着那边的楼梯下去,你就会看到一些指示。照着指示走就到了。