This traditional cleaning process is dangerous and requires cleaners to work within the machines in very close proximity to residues and residue dust.

这种传统清洁方法很危险，需要清洁人员在离机器很近的区域工作来清除残留物与残留灰尘。

youdao

It is laborious and expensive to dismantle and reinforce reconstruction engineering of brick and concrete structure and very dangerous during construction process.

砖混结构改造工程的拆除和加固是件费力费钱的事情，而且施工过程非常危险。

youdao

"We're working very closely with Interpol," "They are in the process of establishing what is called the Dangerous and Disruptive Persons Database which will assist us in identifying people that may pose a potential danger to the tournament as far as organized fighting or hooliganism is concerned."

VOA: standard.2009.06.12

"I must tell you that the recovery process is getting very, very difficult and very, very dangerous, " he said.

CNN: 'Rita scares us to death'