a small, old, relatively cool star; approximately 100 times the mass of Jupiter
双语例句
The rising red dwarf star shows expected stellar magnetic activity which includes dramatic and violent prominences. 上升中的红矮星有著可预期的磁场活动，包含了激烈的日珥现象。
The characteristics of the lensing event show that the planet is in a Jupiter-sized orbit around its parent red star. 这个透镜现象的特征显示出，行星以双红矮星为中心的运行轨迹与木星的轨迹类似。
