I am afraid your point is not relevant.
恐怕你的意見與會議無關。
Your remarks seem to be beside the point.
你的發言好像跑題兒了。
You seem to be getting off the point.
你似乎跑題兒了。
Can you just deal with item number five?
你能否只處理第五項議題?
Let's just deal with the price issue.
讓我們只處理價格問題。
Why don't we stay on the quality control issue?
我們繼續討論質量控制的問題吧?