必需的

• necessitous
• necessary
• required
• vital
• essential

例句

1. 多言的，罗唆的倾向于用超过传达意思所必需的词的，用超过传达意思所必需的词叙述的
   Tending to use, using, or expressed in more words than are necessary to convey meaning.
2. 成本某物的花费，例如时间或劳动，是为达到某一目的而必需的
   The expenditure of something, such as time or labor, necessary for the attainment of a goal.
3. 我没有必需的工具。
   I haven't got the necessary tools.
4. 耐心结合勤奋是成功所必需的。
   Patience combined with diligence is necessary to success.