wear a watch
watch 表示“手表”时是可数名词，单数前要加 a 或 the。
She wears a gold watch on her left wrist.
她左手腕上戴着一块金表。
看守；监视；警戒；值班时间；站岗时段；看守人；警卫；守卫队；观看；注视；（船上的）值班组；值班时间
A small timekeeping device worn on the body, especially the wrist.
便携或可穿戴的计时器
A portable or wearable timepiece.
守护和观察某人或某物的行为
The act of guarding and observing someone or something.
保持警戒的特定时间段
A particular time period when guarding is kept.
双相睡眠模式中两次睡眠之间的清醒期(第一次睡眠或死睡和早晨睡眠或第二次睡眠):第一次醒来
A period of wakefulness between the two sleeps of a biphasic sleep pattern (the dead sleep or first sleep and morning sleep or second sleep): the first waking.
守卫的人或团体
A person or group of people who guard.
守卫的职位或岗位；也指守卫所在的地方
The post or office of a watchman; also, the place where a watchman is posted, or where a guard is kept.
船上或岸上有共同值勤时间的水手和军官组:右舷班,左舷班
A group of sailors and officers aboard a ship or shore station with a common period of duty: starboard watch, port watch.
值班时间段,通常为四小时；在同一值班期间负责船只运作的军官和船员
A period of time on duty, usually four hours in length; the officers and crew who tend the working of a vessel during the same watch. (FM 55–501).
观看或观察一段时间的行为
The act of seeing, or viewing, for a period of time.
I glanced at my watch to see if the bus was coming.
我看了看手表，看公交车是不是快来了。
用法提示：此处'watch'是可数名词，指'手表'。
Her watch stopped working after it fell into the pool.
她的手表掉进水池后就不走了。
用法提示：此处'watch'作主语，是可数名词，意为'手表'。
He received a gold watch as a retirement gift.
他收到一块金表作为退休礼物。
用法提示：此处'watch'是名词，指'手表'。
watch 表示“手表”时是可数名词，单数前要加 a 或 the。
She wears a gold watch on her left wrist.
她左手腕上戴着一块金表。
keep watch 是固定搭配，表示“看守、警戒”，后面常用 over 或 on 引出看守的对象。
Two soldiers kept watch over the gate all night.
两名士兵整夜看守着大门。
on watch 表示“正在值班、站岗”，常作表语或后置定语。
The sailors on watch saw a light in the distance.
正在值班的水手们看到远处有灯光。
wristwatch专指戴在手腕上的表，比watch更具体。
timepiece是通用术语，可指手表、钟等，比watch更正式。
chronometer指高精度计时器，通常用于航海或科学，不如watch日常。
pocket watch指放在口袋里的表，现不常见。
digital watch是电子数字显示的表，与模拟手表不同。
grammar · medium
易错句子My father has three watch.
正确表达My father has three watches.
watch 是可数名词，前面有数词 three 表示不止一个时，必须用复数形式。watch 以 -ch 结尾，复数加 -es，拼作 watches。汉语名词不随数量改变形式，所以容易漏掉复数词尾。
grammar · medium
易错句子She bought watch yesterday.
正确表达She bought a watch yesterday.
watch 是可数名词的单数，英语中单数可数名词前必须有限定词（a/an/the/my 等）。汉语没有冠词，所以容易光说 watch，此处应加不定冠词 a。
grammar · medium
易错句子There is a watch on the wall in the living room.
正确表达There is a clock on the wall in the living room.
watch 指可随身携带或佩戴的计时器（手表、怀表）；固定在墙上或桌上、不能随身带的计时器英语叫 clock（钟）。这里说的是挂钟，所以要用 clock。
反义词针对"watch"作为'看守、监视'的名词义项。注意"watch"还有'手表'、'值班'等其他义项，这些无直接反义词。
手表
He glanced at his wrist watch and realized he was late.
他瞥了一眼手表，意识到自己迟到了。
怀表
The antique pocket watch was passed down through generations.
这块古董怀表代代相传。
表盘
The watch face was scratched after the fall.
表盘在摔落后有了划痕。
表带
She replaced the leather watch band with a metal one.
她把皮表带换成了金属表带。
守望；值班
The guard must keep watch all night.
警卫必须整夜守望。
警惕着
The security guard was on the watch for any intruders.
保安警惕地监视着任何入侵者。
密切注视
The scientist kept a close watch on the experiment.
科学家密切注视着实验。
受监视
The prisoner was kept under constant watch.
囚犯被置于持续监视之下。
沿着瞭望塔，王子们眺望远方
This line is from Bob Dylan's song 'All Along the Watchtower', later famously covered by Jimi Hendrix. The word 'watchtower' means a tower from which a watch is kept, fitting the noun sense of a place or person for observation.
这句歌词出自鲍勃·迪伦的歌曲《All Along the Watchtower》，后来被吉米·亨德里克斯翻唱而闻名。'watchtower'指用于监视的塔楼，对应名词'watch'的瞭望含义。
谁来监视守望者？
This phrase, from the Latin 'Quis custodiet ipsos custodes?', is a central theme in the graphic novel 'Watchmen' by Alan Moore. 'Watchmen' are persons employed to keep watch, directly using the noun sense of 'watch'.
这句话源自拉丁语'Quis custodiet ipsos custodes?'，是艾伦·摩尔漫画小说《守望者》的核心主题。'watchmen'指被雇来守望的人，直接对应'watch'的名词含义。
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在值班
Two sailors were on watch during the storm.
暴风雨期间有两名水手在值班。