gyration：波动

　　Disruptions to oil and gas supplies may add to energy price gyrations，they said.

　　wean off：使脱离

　　China’s central bank pledged Monday to keep the newly unshackled yuan basically stable but urged fresh efforts to wean the economy off export-driven growth.

　　curb：抑制;控制

　　The physical and psychological damage caused by Hurricane Katrina is likely to reverberate across the global economy in ways that will curb growth well into 2006， economists say.

　　perk up：振作起来

　　There were no significant changes from prior quarters， and SupportSoft met revenue estimates. During the conference call， however， management raised an issue that made my ears perk up.

　　cap：限制

　　In an effort to gain some control over what motorists pay at the pump， Hawaii on Wednesday became the first state in the U.S. to set caps on the wholesale price of gasoline.

　　mortgage：抵押贷款

　　Rates on 30-year mortgages declined this week after posting increases for six consecutive weeks.