Obstructions
n. 障碍物( obstruction的复数形式 ); 阻碍物; 阻碍; 阻挠
🗣️ 情景例句
What's the nature of the problem?
是什么样的问题？
Treat it with respect.
请你放尊重点！
Porpoises and sharks are natural enemies.
海豚和鲨鱼是天然仇敌，