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- The solar system was formed 4.5 billion years ago. 太阳系是四十五亿年前形成的。
- A mechanical model of the solar system. 太阳系仪太阳系的机械模型
- The number of known satellites in the solar system rose to 32. 太阳系里已知的卫星数量增加到三十二个。
- active solar system 主动太阳能系统
- Neptune is the eighth planet of our solar system. 海王星是我们太阳系里的第八颗行星。
- Pluto is the furthest planet in the solar system. 冥王星是太阳系中距离太阳最远的行星。
- Pluto is the farthest planet in the solar system. 冥王星是太阳系中最远的行星。
- Such a tilt is unusual in the solar system. 这样的倾斜在太阳系中不常见。
- There are nine planets in the solar system. 在太阳系中有九大行星。
- The sun is the center of our solar system. 太阳是太阳系的中心
- The solar system is a small part of our galaxy. 太阳系是我们星系的一个小部分。
- The mechanism of the solar system. 太阳系的机械系统
- Voyager 1 Sails to Edge of Solar System? 旅行者1号冲出太阳系了吗?
- How special is the Solar System? 期刊论文?
- Could life exist beyond our solar system? 太阳系外有生命生存吗?
- Are nine planets in the solar system. 在太阳系中有九大行星。
- When money is the secret of the solar system. 那是太阳系的秘密当量值。
- Neptune, the 8th planet in our Solar System. 海王星，太阳系的第八颗行星。
- That, then, is the age of the solar system. 那么这就是太阳系的年龄。
- Our solar system has eight planets. 我们太阳系有8个恒星。
