1
- mass noun the action or process of moving or being moved动; 移动：
the laws of planetary motion
行星的运行法则
a cushioned shoe that doesn't restrict motion.
加了衬垫却并不妨碍走动的鞋。
1.1
- count noun a gesture手势：
she made a motion with her free hand.
她用空着的那只手做了个手势。
1.2
- count noun a piece of moving mechanism转动的机械装置：
the earliest engines had the Gresley conjugated motion for the middle cylinder.
最早的发动机的中央汽缸有格雷斯利共轭式转动机械装置。
2
- a formal proposal put to a legislature or committee（向立法机构或委员会提出的）正式提议, 动议：
opposition parties tabled a no confidence motion.
反对党提出了不信任提案。
2.1
- Law an application for a rule or order of court【律】（当庭提出裁决或命令的）请求, 申请。
3
- Brit. an evacuation of the bowels〈英〉排便。
3.1
- a portion of excrement大便：
her mother put on her nappy for her to pass a motion.
她的妈妈给她垫上尿布好让她排便。
with obj. and adverbial of direction
- direct or command (someone) with a movement of the hand or head用手（或头）示意：
he motions her towards the lift
他示意她走向电梯
with obj. and infinitive he motioned the young officer to sit down.他示意那个年轻军官坐下。
短语
go through the motions
1
- do something perfunctorily, without any enthusiasm or commitment敷衍了事, 随随便便地完事。
1.1
- simulate an action模仿某动作：
a child goes through the motions of washing up.
孩子模仿洗碗碟的动作。
in motion
- moving移动; 运转：
flowing blonde hair that was constantly in motion.
不停飘拂的飘逸金发。
set in motion
1
- start something moving or working使开始运转（或工作）。
1.1
- start or trigger a process or series of events引发, 触发, 引起：
plunging oil prices set in motion an economic collapse.
猛跌的油价使经济开始崩溃。
派生词
motional
adjectivemotionless
adjectivemotionlessly
adverb词源
late Middle English: via Old French from Latin motio（n-）， from movere 'to move'.