必要的

• necessary
• essential
• indispensable
• needful
• imperative
• obligato
• requisite

例句

1. 会些法语是非常必要的。
   A knowledge of French is an absolute essential.
2. 非法移民获得必要的居留证後即可使身分合法。
   Illegal immigrants can regularize their position by obtaining the necessary residence permit.
3. 我觉得这是绝对必要的。
   I feel it is absolutely necessary.
4. 我认为这是有必要的。
   I think it is necessary.
5. 果断的行动是必要的。
   Prompt action is imperative.
6. 你要把开销限制在必要的范围内。
   Limit your expenditure to what is essential.