The fan has a good aerodynamic performance, smooth operation, high efficiency, long life characteristics, a total of A, B, C, D four kinds of structures.

该风机具有良好的气动性能、运转平稳、振动小、效率高、寿命长等特点，共有A、B、C、D四种结构。

youdao

You may borrow this dictionary A. as long as B. so far as C. in case D.

只要你能保证这本字典干净，你借多长时间都行。

youdao

B. They have a clear purpose in learning a foreign language. C. They can monitor their own learning. D. They can concentrate for a long time in class.

他们在语言学习中没有明确的目的，无法掌控自己的学习，而且注意力也容易不集中。

youdao

I--We were going D G B G B so as long as the notes have the same names or it sounds the same, even though there may be octave doubling in there we still think of that as monophonic texture.

我,我们只要,D G B G B,只要各个音的音名一样或听起来一样,尽管其中有双八度音,我们仍把它作为做单音织体

耶鲁公开课 - 聆听音乐课程节选

If you combine these various savings that would affect both Part B and Part D, then we actually believe that over the long term you would not see health care costs going up at 8 percent when your Social Security check is only going up 2 or 3 percent.

WHITEHOUSE: President Obama Holds Town Hall in New Orleans