Yahoo! And Microsoft have been talking, off and on, since last year.(雅虎和微軟自去年起進行了斷斷續續的談判。)

We worked for a couple of weeks (off and on) and finally solved this problem.(我工作了兩個周(斷斷續續的)最終解決了這個問題。)

Rather, this is something that I have been thinking about, off and on, for some time.(相反，這是我一直在思考的，斷斷續續地一段時間中形成的。)

Those levels represent a one or zero, just as the off and on states of a transistor correspond to zero or one bits of data in traditional computing.(這些能量態的水平代表0或者1，就像傳統計算機使用晶體管的開關狀態來代表數據位0或1一樣。)

The next step was the lengthy process of turning parts of the system off and on to see what made a difference.(接下來一個漫長的過程開始了，他們把系統的各個部分逐一打開、關閉，看看前后有何區別。)

Lest readers charge me with conflict of interest, I should add that, though we've stayed in touch off and on, we've never socialized.(為了避免讀者指責我利益沖突，我應該補充一點，雖然我們保持著時有時無的聯系，我們從來沒有一起社交過。)

Florescent lights can leave your eyes tired as they are flickering off and on and your eyes have to adjust constantly.(熒光燈的頻閃使你的眼睛不得不持續調節，這會使你的眼睛疲勞。)

I have been studying Japanese off and on for ten years.(我已經斷斷續續學日語有10年了。)

He was a former industrial-arts teacher whom my mother dated off and on for much of my childhood.(他以前是教工業藝術的老師，在我童年的記憶中，他和媽媽總是分分和和。)

By increasing or lessening the hours of darkness in each day, the scientists have been able to turn plant growth off and on like an electric switch.(用增加和減少每天黑暗小時數的方法，科學家已經能夠控制植物生長，如同控制一個電器開關。)