Correct mixture
[建] 标准气体混合物
🧩 词语组成解析
🗣️ 情景例句
Yes? May I help you?
什么事？我能为您效劳吗？
Reckless youth makes rueful age.
虚度青春，悔恨无已。
Heavy iron chains around his feet and hands were fixed to a metal bar that ran round the hall about ten centimetres off the ground.
手上和脚上沉重的铁链拴在厅堂四周离地约有10厘米的金属杆上。