They seem to be having some difficulty in starting the car.
他们在启动这辆小汽车时似乎遇到了一些困难。
However, there has been no systematic overall report on impact factor of starting limited sludge bulking because of short history and higher difficulty in studying.
但是因该理论提出时间短，研究难度大，目前关于污泥微膨胀启动与维持的运行条件尚无全面、系统的报道。
On the street, we hurry for all directionsand we are too busy to dress up for a date, having difficulty in moving on and starting a new relationship.
我们也懒得精心打扮赴一场约会，更何况是向陌生人重新交待一遍自己的人生。
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