After more than 10 years of operation, the generator-transformer protection of the 300 MW thermoelectric units became technologically behind, aging, too complicated in checking, and less sensitive.

运行多年的300 MW火力机组，其发变组保护设备落后、老化、校验复杂、保护灵敏度低。

youdao

Progress in the CDM has really been much too complicated; right now projects can basically count on waiting three years between initial development and certification…

CDM的流程实在是太复杂了，现在一个项目从开发到获得签发基本上都需要三年的时间了…

youdao

But then time and more time went by, and now my original crime was compounded by the crime of not telling her about it for so many years and things were too complicated and I couldn't tell her the truth.

NPR: Chapter 1

Rep. DAVIS: ...instead of making it too complicated to administer and sending it into endless years of litigation.

NPR: Voting Rights Act Renewal Stalled in Congress

For many years, the complicated novel was thought to be "unfilmable" and Lee admitted he thought so too at first.

BBC: Ang Lee 'pulls out of FX TV project Tyrant to rest'