重点词汇
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往返
go back and forth; shuttle; commute; reciprocate; travel to and fro; round trip; to and fro; back and forth
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测试
test; trial; try out; testing
中英释义:
shuttle run test; yo-yo test
往返
go back and forth; shuttle; commute; reciprocate; travel to and fro; round trip; to and fro; back and forth
测试
test; trial; try out; testing