size of space

例句：

1. 1. The size of theroom is small enough for two people tosit comfortably.
   这个房间的大小足够两个人坐得舒服。
2. 2. The size of the planet is determinedby its mass and gravity.
   行星的大小由其质量和重力决定。
3. 3. The size of the cityis expanding rapidly due to population growth.
   由于人口增长，这个城市正在迅速扩张。