Lectostratotype
选定标准地层剖面, 选层型
🗣️ 情景例句
5, 6, 7, go right, 1, 2, back, 5 6 7
向右 1 2 后退
He who would catch fish mush not mind getting wet.
欲擒龙王，就得下海。
Train compartments soon get cramped and stuffy.
车厢很快就变得拥挤、闷热，