头脑: brains, mind, skull, gist (of a matter), leader, boss...
吸烟: to smoke...
相通: interlinked, connected, communicating, in communication, accommodating...
阶段: stage, section, phase, period...
乒乓球: table tennis, ping-pong, table tennis ball...
听到: to hear...
复印: to photocopy, to duplicate a document...
