您要查找的是不是：
- The news comes from a reliable source. 这消息来自可靠的来源。
- 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。
- 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。
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- 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。
- Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
- Tracking wild animals requires great stealth. 跟踪野生动物必须悄然无声。
- 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。
- The sun is the ultimate source of energy. 太阳是能量的最基本来源。
- I'm on the track of a valuable painting. 我在追寻一幅珍贵的油画。
- A source of irritation or annoyance. 令人生气的事或者引起烦恼之事
- Keep track of the time you actually travel. 把你旅行的实际时间记录下来。
- The groundwork or source of something. 基础，根源某事物的基础工作或根源
- Where is the source of the Rhine? 莱茵河发源于何处？
- Signals control each section of the railway track. 各种信号控制着铁路轨道的每个部分。
- He's been a source of discord and worry. 他成为不和和烦恼的根源。
- A locomotive pounded down the railway track. 一辆机车沿着铁道隆隆地驶去。
