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一本
a copy; a volume
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有用
useful; helpful; good; great; beneficial; practical; valuable; serviceable; utilitarian; avail; be useful; be of use; be of service; use; help; usefulness; utility; of use; of value; of service to
中英释义:
A useful book
一本
a copy; a volume
有用
useful; helpful; good; great; beneficial; practical; valuable; serviceable; utilitarian; avail; be useful; be of use; be of service; use; help; usefulness; utility; of use; of value; of service to