n.海王星

Neptune is the eighth planet from the Sun in our solar system.
海王星是我们太阳系中离太阳第八远的行星。
Its atmosphere is primarily composed of hydrogen and helium, with traces of methane giving it a blue appearance.
它的大气主要由氢和氦组成，甲烷的存在使其呈现出蓝色。
Neptune has a system of rings, although not as prominent as those of Saturn.
海王星拥有一套环系统，尽管不如土星的环那么显著。
The planet's largest moon, Triton, was discovered just 17 days after Neptune itself.
海王星的最大卫星特里顿是在海王星被发现后的仅仅17天内被发现的。
Neptune's extreme distance from the Sun makes its year incredibly long, lasting about 165 Earth years.
由于距离太阳极远，海王星的一年极其漫长，大约相当于地球上的165年。
It has the strongest known winds in the solar system, reaching speeds up to 2,100 kilometers per hour.
海王星拥有太阳系中已知最强的风速，可达到每小时2100公里。
Neptune's name comes from the Roman god of the sea, corresponding to the Greek god Poseidon.
海王星的名字来源于罗马海洋之神，与希腊神话中的波塞冬相对应。
The discovery of Neptune in 1846 was a triumph of mathematical prediction over direct observation.
1846年海王星的发现是数学预测胜过直接观测的一个壮举。
The Voyager 2 spacecraft made a flyby of Neptune in 1989, providing the first and only close-up images to date.
旅行者2号宇宙飞船在1989年飞掠过海王星，提供了迄今为止唯一一次近距离的图像。
Neptune's deep interior is thought to harbor a rocky core surrounded by a thick layer of icy materials.
人们认为海王星的深层内部有一个由岩石核心构成，周围包裹着厚厚的冰层。