英和和英

have need of

a necessary thing

according to the need

do the necessary

Is required

to be necessary

of something, to be needed

to urge （on one） the necessity of something―impress upon one the importance of something

something that is indispensable

You will be required to do so.

position or line of employment

a required subject

to meet a need―meet a want

to meet a need

It's necessary.

moderate demands

to supply the demand―meet the demand

It requires consideration

necessary business

more than is needed

by necessity

the degree of necessity

to provide the necessities

in submission to his needs

It is necessary.

the matter which must be addressed

meet a need

absolutely necessary

clamant needs

to gather the necessary things