1. A trade-off should be made between LED parameters, battery lifetime and maximum control distance. 权衡之间应作出的LED参数，电池寿命和最高的控制距离。
2. The trade-off is, as always, designer's decision, but in this case both options would probably work equally well. 权衡依然是设计师的决定，但在这种情况下，这两种选择方案里可能同样好的工作。
3. The fundamental nature of coding is that our task, as programmers, is to recognize that every decision we make is a trade-off. 对于一个程序员而言，编码工作的本质就是：我们在编码的过程中，做出的每一个决定，都是权衡、折衷的结果。
可可英语 - 划词释义
