重点讲解：
1. every now and then 不时；有时；偶尔；
例句：I still see her every now and then.
我仍偶尔能见到她i!HA=[R-UE。
2. in the middle of (某件事或某段时间的)中期；
例句：She came in the middle of the day.
她在中午的时候来了QY^~-bySiqp#MfU!t。
3. heat up 加热；变热；
例句：In the summer her mobile home heats up like an oven.
夏天一到，她的活动住房就变得像烤炉一样热TxzB-[w^HqF2。
4. look out for 考虑…的利益；关照；
例句：I'm just trying to look out for you.
我只是想要为你着想c~)_V2rtkR。