您要查找的是不是：
- Detects high-energy particles passing through a supersaturated vapor,each particle ionizes molecules along its path and small droplets condense on them to produce a visible track. 观察高能粒子穿过饱和蒸汽，每个粒子沿着自己的路径电离分子浓缩在其上的小滴能产生一个明显的轨迹。
- The easy way to do this is to put a visibility track on the particle emitter with an On/Off controller and make it visible for a few frames of the death animation. 当然这对我们来说已经很简单了，为粒子添加一条可见度轨迹，使用开关控制器，然后在死亡动画开始的几祯后设置一个关键祯就可以了。
- 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。
- The hills were barely visible through the mist. 小山隐没在薄雾中难以看清。
- The big rafter is visible in this room. 这间屋子粗大的椽子可以看得见。
- The sea is visible from my hotel room window. 从我旅馆房间的窗户可以望到大海。
- The tower was visible from afar. 从远处就能望到那座塔。
- This star is not visible to the naked eye. 这颗星肉眼看不见。
- 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 emission of visible light by a hot object. 白热光物体遇热发出可见光
- 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。
- Various parts of his anatomy were clearly visible. 他身体的各个部分都看得很清楚。
- Tracking wild animals requires great stealth. 跟踪野生动物必须悄然无声。
- A visible shudder swept over her. 她全身明显一震。
- Mr. Brown is a highly visible politician. 布朗先生是一位经常公开露面的政客。
- The body was visible below the surface of the lake. 尸体在湖水下清晰可见。
- 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。
