to unstring a bow / to slacken / to relax / to loosen
弛
=
弓
+
也
:
Charlie Chaplin (ch) wants to unstring (弛) his bow (弓) in the space station's kitchen (Ø2), but the bow string is too tight. He has to use an excavator's (也) shovel to pin the bow to the ground to be able to untighten the string.