industrial safety and environment protection section工: worker; workman; the working ...安: peaceful; quiet; tranquil; c ...环保: environmental protection课: class环保: (环境保护) environmental protection◇环保局 environmental protection bureau下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:工安环保课，即可在微信中查询翻译
