投硬幣

coin-operated / to insert a coin

to cast / to send / to throw oneself (into the river etc) / to seek refuge / to place oneself into the hands of

hard / stiff / strong / firm / resolutely / doggedly / good (quality) / able (person) / (of food) filling / substantial

coin / CL:枚[mei2]

money / coins / currency / silk