Existing contracts expired at midnight, but negotiators announced a new agreement with Caesars Entertainment.

合同将于午夜到期，但谈判者宣布与凯撒娱乐公司签订新协议。

The ban is delayed until 2024 due to existing contracts with companies that sell the products.

由于销售这些产品的公司还有广告合约未到期，所以广告禁令将延期到2024年开始实行。

The strike comes in light of an unsuccessful 19 months of negotiations after the existing labor contract known as the Interactive Media Agreement expired in late 2014.

此次罢工发生之前，双方进行了长达19个月的谈判，但未能成功。此前，双方签订的名为《互动媒体协议》的现有劳动合同于2014年底到期。

Health experts have noted, however, that most new vaccine treatments for avian flu would be set aside for wealthy nations that already have existing contracts with shot makers.

但是健康专家指出，大多数针对禽流感的新疫苗都将用于已经与销售商存在现有合同的发达国家。

It imposes tough terms on future union contracts, a chief cause of Detroit's financial malaise, and insists that all existing contracts, even those recently ratified, can be reopened.

鉴于公会合同是底特律财政顽疾的重要原因，协议中对未来公会合同条款做出了严格的规定。并坚持要求，所有仍在生效的合约，即使是在最近已做出修改，也都有重新协商的可能。