必需
must; necessary; certainly
Meanings
2 senses · 10 examplesverb
must have; indispensable
Used to describe something that is essential or required for a specific purpose.
These are all daily necessities.
Coal and iron are essential raw materials for industrial development.
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Patience is an essential quality for becoming a good teacher.
Adequate sleep is necessary for maintaining good health.
Water resources are a necessary condition for agricultural development in desert areas.
adverb
certainly; surely; definitely
Used to indicate that something is certain to happen or be true.
As long as you study hard, you will definitely get good grades.
Justice will surely prevail, this is an eternal truth.
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He will definitely stand out in the competition.
If you miss this opportunity, you will certainly regret it.
Everything prepared will succeed, unprepared will fail, this is an inevitable law.