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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。
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。
3. consist of 由…组成；由…构成；
The committee consists of ten members.
委员会由十人组成。
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。
vt. 装饰；使生色
