1. An ancient weapon: Bao ~. Long ~. ~ sheath. ~ surgery. ~ tense (describing the tense situation, explosive, and later referring to the vigorous calligraphy).
The meaning of the arrow:
1. Weapons fired at a distance with bows: bows ~. ~ samarium ~ boss Things have come to the point where they have to be done or words have come to the point where they have to be said. ..
As for which one to use, we can only know by combining sentences.