1. down under : 在/向地球另一边；
副词
形容词
指路
Swimming-(游泳)
生活对话
介词和副词用法（PREPOSITION AND ADVERB USES）
Down is often used with verbs of movement, such as ‘fall’ and ‘pull’, and also in phrasal verbs such as ‘bring down’ and ‘calm down’.
1. (American football) a complete play to advance the football
e.g. you have four downs to gain ten yards
2. soft fine feathers
Synonym: down feather
3. fine soft dense hair (as the fine short hair of cattle or deer or the wool of sheep or the undercoat of certain dogs)
Synonym: pile
4. (usually plural) a rolling treeless highland with little soil