to randomly discover someone or something, particularly in a way that is surprising or unexpected
to keep a vehicle, building, road, etc. in good condition by doing regular repairs, renovations, or examinations
保持
to keep something in a particular place for later use, typically in a systematic or organized manner
(of a system or machine) achieving maximum productivity without wasting much time, effort, or money
a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas)
an object that turns chemical energy to electricity to give power to a device or machine
电池,蓄电池
to have power over a person, company, country, etc. and to decide how things should be done
a plastic or metal container with a lid, used for putting garbage in and usually kept outside the house
a pathway typically made of concrete or asphalt at the side of a street for people to walk on
a building, usually next or attached to a house, in which cars or other vehicles are kept