Collins Chinese Dictionary Plus (3rd edition), 2011:
unofficial [
^n&'fI$l]
adj 1 [+ estimate, report] 非官方的 fēi guānfāng de
2 [+ strike] 未经(經)工会(會)同意的 wèi jīng gōnghuì tóngyì de
在这些条目还发现'unofficial':
在英文解释里:
civil society - common-law - éminence grise - informal - kickback - nonofficial - off the record - straw poll - unauthorized - vigilante - wildcat - wildcat strike