Crater
01
火山口
the round top of a volcano
例子
The scientist studied the formation of the crater after the volcanic eruption.
科学家研究了火山喷发后火山口的形成。
Tourists hiked to the rim of the volcanic crater to view the lava lake below.
游客们徒步走到火山口的边缘，观看下面的熔岩湖。
02
陨石坑, 凹地
a depression on the surface of a celestial body, formed by the impact of cosmic debris such as meteoroids or asteroids
例子
The Moon 's surface is covered with numerous craters of various sizes, formed over billions of years by impacts from space debris.
月球表面覆盖着大小不一的众多环形山，这些是由太空碎片的撞击在数十亿年间形成的。
Planetary scientists study impact craters on Mars to understand its geological history and surface composition.
行星科学家研究火星上的撞击坑，以了解其地质历史和表面组成。
03
a faint constellation in the southern sky, situated near Hydra and Corvus
例子
Crater is difficult to see without a clear night sky.
The astronomer pointed out Crater among the stars.
