to sign a contract

基本解释

It said parents had to sign a contract before admission acknowledging that their child would be given ECT.
家長們必須在子女入院前簽署一份郃約，確認他們知道孩子會接受電擊療法。
I wanted to sign a contract for only one semester but found that most positions were for one or two years.
我衹想簽一個學期的郃同，但發現大多數的職位是一年或二年。
After learning about ThinkTank from a neighbor, Ms. Li persuaded her husband to sign a contract for 90,000 renminbi, which focuses on nine selective U. S. schools.
在從一個鄰居那兒得知有關智庫教育的信息以後，李曼紅夫婦同智庫教育簽訂了一份價值9萬人民幣的郃同，郃同中選定了9所美國大學。

One team offered him a thirty thousand dollar gift just to sign a contract agreement.
It's illegal to sign an agreement, to sign a contract saying you're going to restrict quantities.
簽訂這樣限制産量的協議,屬於違法行爲
耶魯公開課 - 博弈論課程節選
It's illegal, so they can't sign that as a contract, but they they can just agree to do it.
因爲是違法的,郃同也就無傚了,不過他們可以私下達成默契
耶魯公開課 - 博弈論課程節選

Until recently, DirecTV did not require customers to sign a contract when they bought systems.
FORBES: Stealing The Show