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
What about your arms? Lift your arms up like this.
你胳膊怎么样?手抬起来， 像这样。
Thank you for your dinner.
谢谢你的晚餐。
His work starts at half past eight, and finishes at a quarter to five.
30开始工作，4：45下班。