1. 洞：penetrating /彻/尖锐/入木三分/透/穿透的/渗透的/ | penetratingly /洞/ | penetration /渗透/侵透/侵入/
1. Comrade Mao Zedong penetratingly elucidated the vital importance of policy and tactics in revolutionary struggles.
adv
1. with ability to see into deeply
e.g. the author treats his subject penetratingly
Synonym: penetratively