If you have a mortgage, he says, keep cash on hand equal to about 20% of your outstanding mortgage principal balance plus whatever you need in the cash Kitty.

他说，如果你有抵押贷款，那么应该保留未清偿抵押贷款本金余额20%左右的现金加上为满足其他需要而保有的现金。

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The principal told the Chronicle she wanted to keep children safe and avoid hurt feelings.

校长告诉《马斯基根纪事报》，她想确保孩子们的安全，并且避免感情伤害。

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The principal roles of the wife are to keep house and raise the children.

妻子在中的主要任务就是打理家务、养育子女。

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"To help support the economic recovery in a context of price stability, the Committee will keep constant the Federal Reserve's holdings of securities at their current level by reinvesting principal payments from agency debt and agency mortgage-backed securities in longer-term Treasury securities, " the FOMC says, adding it will continue to roll over the Federal Reserve's holdings of Treasury securities as they mature.

FORBES: U.S. Economy

What we have tried to do, though, is to make sure that people who had been making their payments regularly, who are meeting their responsibilities, if they could have a little bit of an adjustment with the banks, if some of the principal was reduced, if some of the interest was reduced on their mortgage payment, they could keep on making payments.

WHITEHOUSE: Discussing the Economy in Albuquerque

Woosung Tire can thank its creditor banks for most of its profits: they agreed to waive interest and principal repayment on its debt, allowing it keep the money as earnings.

ECONOMIST: Smaller South Korean firms