路途中已经出现了几次颠簸。
自去年以来,中国已经出现了骑共享单车的潮流。
China has seen a trend of riding shared bikes since last year.
早在人们开始考虑回收利用之前,回收艺术品就已经出现了。
Recycled art began long before people began to think about recycling.
新的作者身份保护方法已经出现了,这一方法以识别个人写作风格为基础。
New authorship defending methods based on identifying individual writing patterns are already here.
我们是否应该在课堂上通过给学生机会创造新想法来培养他们的创新思维能力,这个问题已经出现了。
A problem has occurred whether we should develop innovative thinking abilities in the classrooms by giving students opportunities to generate new ideas.
研究人员还指出,在我们发现幸福感开始下降之前,在2013年出现最急剧的幸福感下降之前,经济衰退就已经出现了。
The researchers also note that the recession hit some years before we see the beginning of the wellbeing drop, and before the steepest wellbeing decline, which occurred in 2013.
3d技术最近已经出现了复兴。
然而,一些邪恶的东西也已经出现了。
显示海冰范围的地图已经出现了几十年。
Images showing the extent of sea ice have been available for decades.
而且,这种事已经出现了。
现在三者都已经出现了。
迄今为止,已经出现了一些有希望的迹象。
已经出现了几次龙卷风?
已经出现了一些迹象。
其中一些已经出现了这种情况。
现在看来,事情已经出现了转机。
我们知道,实际上它们已经出现了。
但是,报警信号已经出现了。
这样的按订单制造的服务已经出现了。
Some of these make-to-order services are starting to appear.
房地产市场已经出现了过热。
The housing market is already coming off the boil (see article).
毕竟,一个更好的机遇也许已经出现了。
一些地方已经出现了阵雨。
最恐怖的噩梦已经出现了。
最近几年,已经出现了3d立体电影与电视的复兴。
The last couple of years has seen a revival in 3d movies and television.
最近几年,已经出现了3d立体电影与电视的复兴。
The last couple of years has seen a revival in 3d movies and television.
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