您要查找的是不是：
- 入境难吗? Is it hard to get into it?
- 吗 morphine
- 很难吗? Is it difficult?
- 难 problem
- 学下棋难吗? Is it difficult to play checkers?
- 换所气难吗? Is it difficult to control my breathing?
- 难的 hardy
- 办理入境手续 to attend to one's entry formalities
- 是吗 is that right
- 难过的 sorry
- 你好吗？ How are you?
- 难看的 malformed
- 你知道吗 did you know
- 不难 It's no big deal.
- 不是吗 isn't it
- 难耐 intolerability
- 真的吗？ No kidding?
- 不难看出 as will be readily seen
- 这样可以吗？ Is that OK?
- 难解 abstrusity
