隐藏 | yǐn cáng | to hide / to conceal / to mask / to shelter / to harbor (i.e. keep sth hidden) / to hide oneself / to lie low / to nestle / hidden / implicit / private / covert / recessed (lighting) | |
凹入 | āo rù | recessed / concave | |
凹进 | āo jìn | concave / recessed / dented |