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。
If I had known her telephone number, I would have called her.
如果我知道她的电话号码,我就给她打电话了。
They had to work inside the ship, cutting away old metal, fixing new metal plates, drilling holes, laying electrical and phone wires and fixing new pipes for water and steam.