The heart muscles contract to expel the blood.

心脏肌肉收缩以挤压出血液。

《牛津词典》

You are bound by the contract to pay before the end of the month.

按照合同规定，你必须在月底前付款。

《牛津词典》

Don't sign anything until your lawyer has explained the contract to you.

在你的律师向你解释该合同之前什么也别签。

《柯林斯英汉双解大词典》

While in high school, Roberto signed a contract to play baseball for the Santurce Crabbers in the Puerto Rican winter league.

VOA: special.2010.04.11

So shortly after 9/11 the Government made a contract to a company called Acambis to make four hundred million doses of smallpox for $343 million dollars.

11后不久 政府与一个叫做,阿坎比斯的公司签订了合约,目的是用3.43亿美元,制造四亿支天花疫苗

耶鲁公开课 - 生物医学工程探索课程节选

The contract has to specify what are the causes of, let's say, death or a situation in which one is covered.

合约中必须指明,合约建立目的，比如说，死亡或者承保的是什么情况。

耶鲁公开课 - 金融市场课程节选

The Ministry of Defence's (MoD) contract to use Cramber Tor will now be extended until 2052.

BBC: Dartmoor military training secured for 40 years

Gloucestershire County Council signed a 25-year contract to build the facility at Javelin Park, in Haresfield.

BBC: Javelin Park waste incinerator decision 'to be defended'

The deal is a 15-year contract to outsource weapons support at Coulport and Faslane.

BBC: Clyde nuclear contract awarded