gofit，with差别？
从字面上看，fit in（相配）是装入的，是一个物体装入在另一个物体的，譬如轴与轴承、螺栓与螺母；go with（相配）不是装入的，而是伴随在一起的，譬如与手机匹配的充电器、随机器附送的工具。
keep？
I go swimming every day in order to keep fit.
fit的名句？
I work out regularly to keep fit.
我经常做运动以保持健康。
She tries to keep fit by jogging every day.
她每天慢跑以保持健康。
I go swimming every day in order to keep fit.
我每天游泳以保持健康
To keep fit, you can switch to morning or lunchtime exercise.
为了保持健康，你可以转变到早上或午间锻炼。
She and her family bicycle to work, which helps them keep fit.
她一家人都骑自行车上班，这有助于保持健康。
keep？
keep fit 的近义词：保持（身体）健康
keep healthy/stay healthy
keep fit
美 /ˌkiːp ˈfɪt/英
保持（身体）健康
双语例句：
I work out regularly to keep fit.
我经常做运动以保持健康。
She tries to keep fit by jogging every day.
她每天慢跑以保持健康。
I go swimming every day in order to keep fit.
我每天游泳以保持健康。
gym是什么意思？
gym的意思是健身房，体育馆，室内健身操，体操，体育课。；gym作“健身房，体育馆”解是非正式用法，在正式用法里应写作gymnasium。；gym；【音标】英[dʒɪm] 美[dʒɪm]；【变形】复数：gyms；【用法】；
1、健身所；健身房；体育馆（可数名词）；A gym is a club, building, or large room, usually containing special equipment, where people go to do physical exercise and get fit.；
2、健身；（尤指学校的）体育活动（不可数名词）；Gym is the activity of doing physical exercises in a gym, especially at school.；【例句】；1、The gym can be used by both able-bodied and disabled people.；这家健身房，健全和残障人士都可使用。；2、While the lads are golfing, I work out in the gym.；小伙子们打高尔夫球的时候，我在健身房锻炼。；
3、The gym teachers lined us up against the cement walls.；体育老师让我们靠着水泥墙排好。；
4、We go to play badminton in the nearest gym every Sunday.；每个星期天我们都去最近的体育馆打羽毛球。；
5、Gym is his favorite sport.；体操是他最喜爱的运动。
