How do you feel, when I push down here?
我向下推这儿时您有什么感觉?
If you were trying to describe how a gun-pointing servo mechanism works, you might start out by saying, "Suppose I push down on the gun-barrel to create a position error."
如果你试图去描述火炮瞄准的伺服机制是如何工作的,你可能会这样开头:“假设我把炮管下压产生了一个位差。”
And I look at this statement [from the Federal Reserve] and see that this is a Fed that is trying to push mortgage rates down by buying mortgage securities.
而我看到联储会的这项声明,我发现这是联储会希望经由购买房贷债券来促使房贷利率下降。
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