This will involve some daring, with the aircraft spending all day climbing as its batteries are recharged and then descending slowly under power throughout the night to conserve energy.
The syndicate appears to be organized like a typical corporation, with descending levels of power.
这个犯罪集团像大公司一般组织的井井有条，权力层层下放。
3
When there is on electrical power, slow descending control of circular chain ladder as well as to assure the reliability in use when set aside for a long time has to be solved.