This month, for example, it added the option to make direct payments to its service, letting users donate a specified sum directly to a website.

例如，本月它增加了直接为其服务付款的功能，让用户直接为网站支付特定数额。

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In case there is no indication of the extra service charges and the specified sum shall be regarded that the relative charges have been included in the price of the products.

如没有注明需额外收取服务费和服务费的数额，则视为有关技术服务的费用已包含在软件产品价格之内。

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So far, EU leaders have agreed only that a general, global figure of $150 billion in aid is needed, but they have not specified their own share of that sum.

欧盟领导人迄今只就援助的总金额达成了共识，即全球需要1千5百亿美元的援助，但是他们还没有确定各自需要承担的金额。

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Deferred compensation plans, meant as retention incentives, give executives a lump sum after a specified number of years on the job.

WSJ: Ex-Penn St head was top paid among public colleges

My favorite is to get someone, a friend, to count the tics over some specified period of time, like a speech, and then charge the offender an agreed-upon sum for each offense.

FORBES: Do You Have a Speaking Tic?