🧩 词语组成解析
🗣️ 情景例句
I understand you used to be in the construction business,
听说你过去从事建筑业
Opportunity only knocks once.
机不可失，时不再来。
They disregard social conventions without being conscious that they are doing anything extraordinary.
他们不顾社会习俗，意识不到自己所作所为有什么特殊之处。