hand / (formal) to hold / person engaged in certain types of work / person skilled in certain types of work / personal(ly) / convenient / classifier for skill / CL:雙|双[shuang1],隻|只[zhi1]
柄
=
木
+
丙
:
Brunhilde (bi) wins a bronze medal (丙) for controlling the engine in its living room ((e)ng3) by using a self-built controller (柄) featuring the stems of two Christmas trees (木) as handles (柄).