He was a dull man and you had to explain things very slowly to him.
他脑筋迟钝,你必须慢慢地给他解释事情。
I wonder if you are on my side.
我不知道你是否站在我这边。
After switching on powerful arc lights, they saw great stalagmites -- some of them over forty feet high -- rising up like tree-trunks to meet the stalactites suspended from the roof.