You've got a soft touch, but I'm a heavy hitter.

你的只是挠痒痒，我的可是重击。

She's a heavy hitter when it comes to writing dialogs.

在编写对话方面，她是个重量级人物。

But there is another big influence when it comes to rates, a heavy hitter that helps set the tone for mortgages and credit cards and student loans.

但利率还有另一个重大影响，它是有助于为抵押贷款、信用卡和学生贷款定下基调的重要因素。