研制: to manufacture, to develop...
流露: to reveal (indirectly, implicitly), to show (interest, contempt etc) by means of one's actions, tone of voice etc...
自始至终: from start to finish (idiom)...
合作: to cooperate, to collaborate, to work together, cooperation...
下车: to get off or out of (a bus, train, car etc)...
前夕: eve, the day before...
动力: motive power, force, motivation, impetus...
亲友: friends and relatives...
审批: to examine and approve, to endorse...
温暖: warm...
