Maintenance manual
[计] 维护手册\\n[化] 保养手册
🧩 词语组成解析
🗣️ 情景例句
He shows complete indifference to others feelings.
他对别人的感受漠不关心。
Never be weary of well doing.
行善莫厌烦。
A young English writer made the pertinent observation a year or two back
一两年前，一位年轻的英国作家发表了中肯的看法。