to dredge / to clear away obstruction / thin / sparse / scanty / distant (relation) / not close / to neglect / negligent / to present a memorial to the Emperor / commentary / annotation
疏
=
㇇
+
止
+
㐬
:
Mnemonic symbol: a dredger. Sheldon Shrimp (shu) is operating a dredger (疏) in front of the space station (Ø1). First he clears the way of all the beaks (㇇) and pendant-cups (㐬), then he puts up a barrier (止) to stop the space-road from being obstructed again.