重点讲解：
1. never mind
没关系；不要紧；没什么；
eg. Never mind. Accident will happen.
没关系。难免会有意外。
eg. Never mind, next time I'm sure you can do better.
不要紧，我相信你下一次一定能做得好些的。
2. be stuffed with
填满；装满；塞满；
eg. My daughter asked me to buy her a pillow stuffed with feathers.
我女儿请求我给她买一个羽绒枕头。
eg. His head is stuffed with silly romantic ideas.
他满脑子天真的想法。
3. make up one's mind
拿定主意；下定决心；
eg. Once he made up his mind to do something, there was no stopping him.
一旦他下定决心做某件事，就没有什么能够阻止他。
eg. They gave me a week to make up my mind.
他们允许我有一周的时间作决定。
4. make out
把…弄清楚；理解；明白；（勉强地）辨认出，看出，听出；
eg. I could just make out a tall, pale, shadowy figure tramping through the undergrowth...
我只依稀看见一个高个的模糊身影穿过了矮树丛。
eg. I couldn't make it out at all.
我一头雾水。
5. mixed-up
（常指因情感或社会问题而）头脑混乱的，迷惑不解的；
eg. I think he's a rather mixed up kid...
我认为他是一个思想有障碍的孩子。
eg. I get mixed up about times and places.
我没有时间感和方位感。
6. keep track of
跟上…的进展；掌握…的最新消息；
eg. With eleven thousand employees, it's very difficult to keep track of them all.
对于一支 1。1 万人的员工队伍，很难及时了解到所有有人的动态。
eg. Keep track of the time you actually travel.
把你旅行的实际时间记录下来。
7. save up
储蓄；积攒；攒钱；
eg. Julie wanted to put some of her money aside for holidays or save up for something special.
朱莉打算把她的钱拿出一部分用于度假或者存起来作特殊用途。
eg. People often put money aside in order to save up enough to make one major expenditure.
人们常常为了一笔大的开销而存钱。