2. We bought a kilogram of lemons from the supermarket. 我们从超市买了一公斤的柠檬。
3. We will take a chunk of some material and we will call it a kilogram. 我们取一大块物质,称它为一千克。
4. Can you run a 140,000 kilogram train on just the steam generated by solar power? 仅仅依靠太阳能产生的蒸汽,14万公斤的火车能驱动起来吗?
5. A device that weighs less than one kilogram is part of a mission that will allow scientists to deliver fourth generation or 4G mobile coverage to the moon in 2019. 这个不足一公斤的设备是一个任务的组成部分,该任务可以让科学家在2019年将第四代或 4G 移动网络覆盖月球。