您要查找的是不是：
- gas vacuum photo tube 气体真空光电管
- vacuum photo tube 真空光电元件,真空光电管
- photo tube type fraction collector 光电管型分次收集器
- Keep the sun behind you when you take a photo. 拍照时要让太阳留在你的身后。
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
- He showed me a photo of a family group. 他给我看一张合家欢的照片。
- Many a time have we come across this same photo. 我们多次都见到过这同一张照片。
- He adjusted the shutter before taking a photo. 在照相前，他调整了快门。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- The woman on the photo is my paternal grandmother. 照片上的这个妇人是我祖母。
- He held the test tube in his hand thoughtfully. 他沉思地把试管拿在手里。
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
- He took a lot of photo last sunday, and so do I. 他上星期照了许多照片，我也一样。
- Some people are living in a vacuum. 有些人过着与世隔绝的生活。
- The photo made him quite attractive. 照片把他拍得相当英俊。
- A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。
- That photo is a good likeness of David. 戴维那张相片照得很像。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
