3.[singular, uncountableU]American EnglishAmE used to describe a film that has been officially approved as suitable for people of any ageG级〔指经官方审看批准适合所有年龄段观众观看的电影〕SYN British English U U → PG
4[countableC] technical a unit for measuring the force caused by gravity on an object as it starts to move faster and faster 〔一个〕G力〔物体加速或减速时因重力作用所受力的单位〕
Astronauts endure a force of several G’s during take-off.
宇航员在起飞时要承受数G的力。
high g-forces
很高的G力
5.[uncountableU]American EnglishAmE a grand (=$1,000) 一千美元