Firmed
vt.& vi. 使坚固（firm的过去式与过去分词形式）
🗣️ 情景例句
I have received the secretarial training for six months.
我曾接受过6个月的秘书训练。
John has built up his own business.He owns a hotel.
约翰建立了他自己的生意，他拥有一家宾馆。
the movements of the ground or of the table as the quake passed by.
大地和桌子的运动情况。