I must take issue with your over what you said at the meeting.
我要和你好好谈谈你在会上说的那些话。(take issue with someone: 对某人的观点提出异议。)
Yes, and we must stop people walking on this floor until it's firm. It may be necessary to put up a notice saying Keep off. Another thing, we' ll have to drill a hole in the wall for the electric wires.
是的,因此在地板牢固前,我们必须防止人们从地板上行走。可能还需要竖一个布告牌,写上“不得践踏”。还有,我们必须在墙上钻一个电线孔。