41.  As a result, the field will develop slowly or stagnate.

42.  In 1990 , Americans' income was $20000, ten years past , it increased by $5000, which was considered slowly.

43.  To sum up , Americans' average income went up slowly , while the average expenses rose more quickly than it , so American got less in the end .

44.  Such as the overburdened public points , slowly traffic , the lack of payment scheme and malignant competition .

45.  A large quantity of various schools are slowly adopting this new ways in education.

46.  Without other fields' knowledge and experience, it can only develop slowly or remain stagnant.

47.  As we all know, since that Copernicus raised the Copernican system, the astronomy develops slowly because of no useful equipment for seeing the sky.

48.  She always wears a cute smile, talks with her sweet voice and walks slowly and elegantly ---- it's difficult for any men not to have a good feeling for her, including Jia Baoyu.

49.  In these cultures friendships develop slowly, since they are built to last.

50.  Nowadays more because societal flippancy, young people dislike spending time in scientific research, which explains why science literacy is growing slowly.