词汇	why all this sudden change?
释义	why all this sudden change? 何以变卦?
随便看	Functional Test Data functional test demonstration Functional Test Document functional test equipment functional tester functional test flight functional testing functional testing for microprocessor systems functional test of communicating branch valve functional test of earthquake direction functional test of fat metabolism functional test of superficial veinvalve functional test procedure Functional Test Report Functional Test Request functional test requirement functional tests functional test specification functional test unit Functional Test Vehicle functional text analysis functional textile functional textile material functional textiles functional textual analysis