Bottlenecks
n. 瓶颈( bottleneck的名词复数 ); 瓶颈路段（常引起交通堵塞）; （尤指工商业发展的）瓶颈; 阻碍
🗣️ 情景例句
We had a good day.
我们今天玩得很开心。
I'm not young enough.
我还不够年轻。
By bicycle? From Beijing? That's a long trip.
骑自行车去？从北京出发？这可是长途旅行呀。