他们住在山洞里猎取野兽采集果子: they lived in caves hunted animals and gathered fruit
正好: 1.(恰好) just in time; just right; just enough 短语和例子你来得正好。 you've come just at the right moment. 你下班时坐这趟车正好。 when you knock off work, you'll be just in time to catch that bus. 这帽子我戴着正好。 this
