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to be able to use; useable; to have a use for; (in a question) to be necessary to
to use; to employ; to have to; to eat or drink; expense or outlay; usefulness; hence; therefore
to obtain; to get; to gain; to catch (a disease); proper; suitable; proud; contented; to allow; to permit; ready; finished
(chess) move; trick; all right!; (dialect) to add
这把工具你用得着吗？
Practice each character