Passports
n. 护照( passport的复数形式 ); 手段, 保障
🗣️ 情景例句
Well, we may read together aloud at home.
嗯 ，我们或许可以在家， 一起大声朗诵。
No answer.
没有人接电话。
The currents of air that the walls of the ship direct upwards, as well as in the line of its course, are enough to give the great bird with its immense wings sufficient sustenance and progress.
沿船体的上升的气流和沿航线向前的气流给这种巨翼大鸟以足够的浮力和推力。