但是医学专家说，现在麻醉的安全性已经大大的提高了。
But medical experts say the safety of anesthesia has greatly improved.
选择本公司的服务大大的提高了您公司产品的附加值。
The choice of the company's services greatly enhance the value of your company's products.
这项研究大大提高了我们对语言学习的认识。
This research has done much to advance our understanding of language learning.
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