Forcing the dependencies on interfaces allows you to provide a variety of implementation classes that implement the interface's contract.

强制对接口进行依赖，可以提供各种实现了接口的合约的实现类。

youdao

After Diego died I wanted to come home, and this guy was forcing me to sign a contract with him.

迭戈死后我想回家，可这个家伙却强迫我和他签合同。

youdao

Did Rooney win, his brinkmanship forcing the club to offer a more lucrative contract than it intended?

鲁尼赢了吗，他的边缘政策迫使俱乐部提供了一份比原定计划更丰厚的合同？

youdao

Last year it completely stopped the contract, forcing a court to decide whether the Air Force could go ahead with a new bid.

FORBES: Move up http://i.forbesimg.com t Move down

Mr Derek Machin, acting chairman of the BMA's consultants' committee, warned the government against forcing new consultants to accept the contract.

BBC: 'Go it alone' threat from doctors

This is forcing Japanese companies and foreign companies operating in Japan to use U.S. courts and U.S. contract law, he says.

FORBES: Japan's Dirty Secrets