犹豫: to hesitate...
镇静: calm, cool...
头脑: brains, mind, skull, gist (of a matter), leader, boss...
跌: to fall, to tumble, to trip, (of prices etc) to drop...
参与: to participate (in sth)...
或: maybe, perhaps, might, possibly, or...
变化: change, variation, to change, to vary...
跳远: long jump (athletics)...
没: drowned, to end, to die, to inundate...
车间: workshop...
