您要查找的是不是：
- gain tracking tube 增益调节管
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- You can gain by watching how she works. 看她怎样工作就可获益。
- Oil share show modest gain over the week's trading. 石油股票价在上星期的交易中略有上升。
- The masses gain experience through struggle. 群众通过斗争可以取得经验。
- This rough track will soon be a metalled road. 这条坑坑洼洼的路不久就要铺上碎石了。
- I'm trying to track down my old Aunt Maud. 我正试图寻找到我那年迈的婶婶莫德。
- It is not for the love of gain that he does so. 他这样做并非为了得什么好处。
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- Bill has a feeling he is on a fast track. 比尔感觉到他正快速迈向成功。
- The new race track is nearly six miles in extent. 这条新跑道将近六英里长。
- We hope for some gain from our investment. 我们希望投资有利可图。
- Tracking wild animals requires great stealth. 跟踪野生动物必须悄然无声。
- No practice, no gain in one's wit. 纸上得来终觉浅，要知此事须躬行。
- Gain got by a lie will burn one's fingers. 靠欺骗得利，准要吃亏。
- John bears the bell in all track events at school. 约翰在学校里的各个径赛项目中都赢得第一名。
- Fame and gain are but chips to him. 他视名利为尘土。
- I'm on the track of a valuable painting. 我在追寻一幅珍贵的油画。
- He has no aspiration for fame or gain. 他不图名利。
- Keep track of the time you actually travel. 把你旅行的实际时间记录下来。
