资料来源 : pyDict

深不可测的

资料来源 : WordNet®

unplumbed
     adj : situated at or extending to great depth; too deep to have
           been sounded or plumbed; "the profound depths of the
           sea"; "the dark unfathomed caves of ocean"-Thomas Gray;
           "unplumbed depths of the sea"; "remote and unsounded
           caverns" [syn: {profound}, {unfathomed}, {unsounded}]