如果能够正确使用普通肥皂，它可以有效地杀灭细菌。
Ordinary soap, used correctly, can deal with bacteria effectively.
你如果能正确和有效地使用一个字，你就了解它了。
If you can use a word correctly and effectively, you comprehend it.
手术方法的改进是正确，有效地矫正鼻咽癌的方法。
The improvement of the operative method is reasonable and effective in correcting pectus carinatum.
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