1. A is completely / totally / entirely different from B.

　　2. A and B are different in some/every way / respect / aspect.

　　3. A and B differ in….

　　4. A differs from B in….

　　5. The difference between A and B is/lies in/exists in….

　　6. Compared with/In contrast to/Unlike A, B….

　　7. A…, on the other hand,/in contrast,/while/whereas B….

　　8. While it is generally believed that A …, I believe B….

　　9. Despite their similarities, A and B are also different.

　　10. Both A and B …. However, A…; on the other hand, B….

　　11. The most striking difference is that A…, while B….

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（编辑：何莹莹）