放假期间你读了很多书吗？Did you have a lot of reading during the vacation?我们放假期间,接连数日下雨.It rained for days on end during our holiday.我想我们大概会在八月放假.We'll take our holiday sometime in August, I think....
Less common reagents that attack polymers include acids, bases.比较不常见的浸蚀多聚物的化学浸蚀物有酸 、 碱.They experimented with new reagents and succeeded.他们用新试剂做了试验,获得了成功.Warm your reagents ( media, PBS, trypsin ) to 25 - 37� � C prior t...