Without warning, Bardo smacked his fist into his open hand.
毫无预警地,巴多用拳头啪地猛击了他张开的手。
If you open something such as a bottle, box, parcel, or envelope, you move, remove, or cut part of it so you can take out what is inside.
开封 • I opened the letter. 我拆开了那封信。
He was there, though, for the official opening.
然而,他到了那儿是为了参加正式开幕。