Friction swa
[机] 磨擦锯机
🧩 词语组成解析
abbr. 可溶性成虫抗原（soluble adult worm antigen）
🗣️ 情景例句
What's the nature of the problem?
是什么样的问题？
I would like to write to the employment agency for a job.
我要写信给职业介绍所代我找一份工作。
City born and city bred.
我生在城市，长在城市，