重点讲解：
1. when it comes to 谈到，涉及；
Each nation has its own peculiarities when it comes to doing business.
谈到做生意，各国都有其独特之处i1n,si.%cOI+~。
2. be made up of 由…组成；
Common salt is made up of 40% sodium and 60% chloride.
食盐由40%的钠和60%的氯化物构成tCHZylL)~1pG。
3. consist of 由…组成；由…构成；
The committee consists of ten members.
委员会由十人组成E%s*4ta2Vs1FFP5yvm。
4. no matter 不管…；无论…；
No matter what your age, you can lose weight by following this program.
不论年龄多大，都可以按这套方案来减肥(#Hn69c&0Cs*|dg#gJ。