They had different ways of dealing with not seeing well.
他们以不同方法应对看不清东西的问题。
2
Dai had never taken well to foreigners and avoided dealing with them.
戴笠与外国人的关系从来都不好,因此也避免与他们打交道。
3
Well, when dealing with user input from forms, for example, you typically check each form submitted to make sure that it's what you expect (numbers, ZIP code, alphabetic characters, and so on).