Constitute an obstacle
构成障碍
🧩 词语组成解析
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
🗣️ 情景例句
I don't see what you are getting at.
我不明白你究竟是什么意思。
The best teacher one can have is necessity.
我们能得到的最好教师是“需要”。
When the balloon was over the station, the pilot saw one of the men taking photographs.
当气球飞临基地上空时，飞行员看见有一个人在拍照。