(military) to mount a secondary attack / (fig.) to assist in tackling a problem / (sports) to participate in a play in which a teammate scores (i.e. perform an assist)
助
=
且
+
力
:
Mnemonic symbol: water wings helping you to learn how to swim.
Julian Giant Squid wants to learn how to swim and put on a lot of floaties in the space station's bathroom. As he hits the power button to inflate the high tech floaties remotely he forgot that there are still a lot of floaties left, stored in the shelf—he is reminded instanlty as also all of them inflate.