Obstructions
n. 障碍物( obstruction的复数形式 ); 阻碍物; 阻碍; 阻挠
🗣️ 情景例句
That's reassuring.
真令人安心。
Who answers suddenly knows little.
答得迅速，懂得不多。
May I come in, please? I'm sorry I'm late.
我可以进来吗？对不起，我迟到了。