System design includes problem domain classes design, human interface classes design and data management classes design.

Program Close to the Problem domain.

靠近问题领域编程.

Then it reached a desert, "I went through so many difficulties ． I should have no problem crossing the desert," she thought ．

然后它到达了一个沙漠,"我经历了这么多的困难。我穿越沙漠应该没有问题,"她想。

J: Yes. Could you tell her to call me when she comes back? R: Sure, no problem.

J：是的。你能告诉她回来后给我打电话吗?R：当然,没问题。

A: No problem. Let's make it.Catch you later. B: Catch you. A: Me too.

A：没问题，我们走吧，待会儿见。B：待会见。A：我也是。

'Can you repair it?' — 'No problem'

“你能修好它吗？”——“没问题。”

A: No problem. Oh, there comes the bus! Good-bye! B: Bye-bye!

A：没问题。哦,公共汽车来了！再见！B：再见！

"Wonderful!""No problem!"

"太棒了！"没问题！"

A: No problem. I will come tomorrow morning.Is that OK?

A：没问题。我明天早上来。可以吗?

You should have no problem with reading this language

阅读这种语言你应该没问题。

"I should have no problem crossing the desert," she thought.

她想，“我穿越沙漠应该没什么问题。”

He had gatecrashed but he was with other people we knew and there was no problem.

他不请自来，但他是跟我们认识的人同行，因此也没有什么关系。

No problem! There is nothing to worry about.

没问题！不用担心。

Rabbit: "No problem. Do you want to see why?"

兔子：“能发表，你想知道为什么吗？”

He says he'll have no problem authenticating the stamp

他说自己可以对这枚邮票进行鉴定。

A: No problem. Oh, here comes the bus! Goodbye! B: Goodbye!

A：没问题。哦,公共汽车来了！再见！B：再见！

I should have no problem crossing the desert, she thought.

她认为我穿越沙漠应该没什么问题。

A: No problem. I'll see you in a few days. Talk to you soon.

A：没问题。几天后见。下次再联系。

The expenses are no problem.

关于费用问题嘛，好说。

The squirrels had no problem coming up right to me for them.

松鼠们毫不犹豫地向我走来。

Consequently, we should have no problem reaching our goals this year.

因此，我们达成今年的目标应该没有问题。