相反，对于我们称之为注意力的东西，来源是有限的，但是我们有一百万种方法来划分，管理和保存我们的注意力。
Instead, there is a limited supply of this thing called attention, and a million ways to divide, manage, and preserve it.
借款限额的提高得以实现，同时保存了国际复兴开发银行在债券市场上的AAA等级，世行利用这一优势低价借款，并以有竞争力的利率放贷。
The borrowing limit increase was achieved while preserving IBRD's AAA rating in the bond markets, which it exploits to borrow cheaply and lend at competitive interest rates.
雌性成蜂易于低温保存，对寄主有较强的搜索力和攻击力。
The female wasps could be stored under low temperature safely without influence on their host-searching and host-attacking abilities.
雌性成蜂易于低温保存，对寄主有较强的搜索力和攻击力。
The female wasps could be stored under low temperature safely without influence on their host-searching and host-attacking abilities.
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