开动: to start, to set in motion, to move, to march, to dig in (eating), to tuck in (eating)...
幕: tent; canopy, curtain, screen...
渡: to cross, to pass through, to ferry...
理会: to understand, to pay attention to, to take notice of...
电网: electrical network...
回落: to fall back, to return to low level after a rise (in water level, price etc)...