terminator

The article described Yeltsin as a terminator of the Soviet system.

文章将叶利钦描述为苏联体制的终结者。

As the moon rises, the terminator will fall across the crater, and the floor of the crater will be in shadow.

随着月亮升起，明暗分界线将会跨越陨石坑，陨石坑的底部将处于阴影之中。