Almost all think life has improved since 1990, or at least got no worse.
几乎所有人都认为自1990年以来生活有所改善，至少没有变得更糟。
He told us that he had been studying English since 1990.
他告诉我们他从1990年就一直学英语。
She has been a doctor since 1990.
她自1990年以来就是医生。
我从1990年就来这了。
Great changes have taken place here since 1990.
自1990年以来这里发生了巨大的变化。
Great changes have taken place in China since 1990.
从1990年中国发生了巨大的改变。
Single molecule detection has made a tremendous development since 1990's.
自上世纪 90年代以来 ，单分子检测已经取得了巨大的进步。
"This is probably one of the worst storms since 1990," a meteorologist in Seattle said.
西雅图气象专家表示，这也许是自1990年以来最严重的暴风雪。
Since 1990 we have seen mostly 'jobless growth'.
自1990年以来，我们所看到的多是‘无就业增长’。
Since 1990, the report said, pregnancy rates are down in almost every category.
工作报告还指出，从1990年起，各个年龄段的怀孕率都呈下降趋势。
Since 1990, CO2 emissions in the U.S. have grown at an average annual rate of 0.6%.
自1990年以来，美国的二氧化碳排放量以年均0.6%的速度增长。
Since 1990, some have made the annual concert a part of their memorial day weekend.
从1990年开始，一些人将这个一年一度的音乐会作为他们周末纪念活动的一部分。
Since 1990, some have made the annual concert a part of their memorial day weekend.
从1990年开始，一些人将这个一年一度的音乐会作为他们周末纪念活动的一部分。
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