Extraofficial
a. 职务以外的, 职权外的
✅ 同义词
🗣️ 情景例句
He is fun to be with.
与他相处很有趣。
Nothing is impossible to a willing mind.
世上无难事，只怕有心人。
Sending a fax is more expensive than posting a letter, but much quicker.
发传真比寄信要贵些，但是要快得多。