必需

必需 [bì xū]

1. ■ essential; indispensable; vitally need:

发展工业所必需的原料 raw materials essential for industrial development;

用在最必需的地方 be used where it is most needed;

这些参考书是我们所必需的。 These reference books are necessary to us.

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常用词组

1. ■ 必需氨基酸 essential amino-acid;

2. ■ 必需费用 necessary expense;

3. ■ 必需基因 indispensable gene;

4. ■ 必需酶 indispensable enzyme;

5. ■ 必需品 necessities; consumer goods; necessaries; requirement;

6. ■ 必需生产资料 necessary means of production; required means of production;

7. ■ 必需物品 indispensable;

8. ■ 必需脂肪酸 essential fatty acid