The compiler will make specific checks via Contracts to ensure that all the conditions specified are met, issuing warning if they are not.

编译器会根据契约来检查代码是否满足了所有的条件，并在出现状况时发出警告。

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White House officials have been warning for days that the July 31 target would most likely not be met, although there are reports a deal may be near.

白宫官员多天来一直警告说，很可能不能在7月31号这个最后限期前达成这项协议，但是有报导说，协议可能会在近期内达成。

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Later this year GMail and Google Calendar will be added to the list of applications not supporting older browsers. That does not mean the users will be met with just a warning message.

今年晚些时候，GMail和Google Calendar也将不再支持老式浏览器，但这并非表示用户仅仅只会收到一条警告消息而已。

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The conditions present us with what seems to be a paradox, on the first day of spring - the Met Office warning members of the public to take care in potentially icy conditions because of the low temperatures.

BBC: Spring equinox today but winter lingers

The Met Office was warning of a risk of ice after temperatures dropped to -6C (21F) overnight.

BBC: Motorists warned in Herefordshire and Worcestershire

"The Met Office is warning of widespread ice this morning, " said BBC Wales weather presenter Sue Charles.

BBC: Schools shut after snow and ice in Wales