- 1. straight on the head; right in the face
 - ♦ ~一拳 hit sb. right on the head
 - ♦ 他走到门口~撞上了老王。 As he reached the door, he bumped straight into Lao Wang.
 - 2. at the very start
 - ♦ 他一进门~就问:“准备好了吗?” The moment he entered the room he asked, “Is everything ready?”