薄冰实用英语语法详解Alesson 34
动名词+名词，例如：
voting booth (投票处) dining room (食堂)
chewing gum (口香糖) washing machine (洗衣机)
boarding card (登机证,登船证) sleeping-pills (安眠药)
skating-rink (溜冰场） walking-stick (手杖)
动词+副词，例如：
take-off (起飞) break in 闯入/突破
warm-up (热身) look-out (警戒)
try-out (试用) get-together (联欢会)
make-up(化妆)
形容词+名词，例如：
greenhouse (温室) blueprint (蓝图)
black list (黑名单) double-dealer (两面派)
