合同工的英文：
jobbing work
contract worker
contract labor
jobbing是什么意思：
n. 工作，零活
v. 做零工，打杂
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You are not qualified for this job.
你不适合这份工作。
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That is a job and a half.
那是非常困难的工作。
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To assign a peripheral to a job for the duration of the job.
把一个外围设备在作业期间内指定给一个作业使用。
contract是什么意思：
n. 契约；合同；婚约
v. 感染；（使）缩小，缩短，收缩；订契约
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The contract was negotiated.
合约已谈妥。
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confidentiality of contracts
合同的保密性
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Renewal of contract
合同的续订
