Buttonings
(buttoning 的复数) 圆钮定位法
🗣️ 情景例句
Is there a convertible model available?
这里有敞篷车吗？
Who is going to have dinner?
谁要来吃晚餐？
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，