英和和英

to be very useful

be beneficial for

a useful thing

to give a person something to use at his/her disposal

of a thing or person, being very useful to do something

to put something to some use

a useful way of using something

a means of serving

potentially useful

be of use

deplete

to answer the purpose―serve one's turn―（形容詞をもって言い表せば）―to be useful―serviceable―helpful―available―good for something.

a thing that is useful

usefulness of a thing

of something, to be useful

to be useful―of use―serviceable―of service―good for something

to use something because of its convenience

to make good use of something

to be fit for use―fit for service

to wear out or use completely

handle effectively

I am engaged.

to use something in a wasteful manner

the degree to which something is convenient to use

what is left over after spending―the remnant

I have some business to attend to

I have something to do

I am engaged.

having a benefice

easy to use