Opera artists began using layers of masks made of oiled paper. They could peel one after another in the blink of an eye.这里的one after another是指layer还是mask呢?
As time goes by,the society has witnessed more people and experienced a booming industry as well as more prosperous economy.这句话的句子结构看不懂,意思也翻译不出来,麻烦拜托老师把句子结构及意思讲解下好吗?谢谢老师!
The group has also weathered accusations that it reinforces self-hating stereotypes or being racist toward white people.
这里的being是和reinforce连起来看吗,reinforce doing?
This week,however,crisper has caused more unease than optimism,because of claims by a Chinese scientist that he edited the genomes of twin girls when they were embryos,as part of ivf treatment.这里as介词短语是什么用法?非限制性后置定语?