请你把烟熄灭好吗？这里不准吸烟。
B：Sorry, I didn't notice the sign.
对不起，我没注意到标志牌。
allow /??la?/ v. 准许，允许
sign /sa?n/ n. 标志牌，标志，符号；征兆
◆ put out 熄灭（烟、火等）
给某人一支烟 give someone a cigarette
A：Can you give me a cigarette?
你能给我一支烟吗？
B：Sorry, but I haven't got any on me, either.
不好意思，但是我身上也没带烟。
◆ have (got) sth on/with sb 某人身上带有某物
沾染烟味 pick up the smell of cigarettes
A：I don't want to pick up the smell of cigarettes.Would you mind sitting over there instead?