- in sing. the route or direction followed by a ship, aircraft, road, or river（船、飞机、道路或河流的）路线, 路径; 走向; 航向：
the road adopts a tortuous course along the coast
这条路沿着弯弯曲曲的海岸线而建
the new fleet changed course to join the other ships.
新船队为了加入其他舰船而改变了航向。
- the way in which something progresses or develops进展; 进程; 过程; 经过：
the course of history
历史进程。
- a procedure adopted to deal with a situation行动方针; 程序; 做法：
the wisest course of action is to tackle the problem at source.
最明智的做法是从源头上解决问题。
- the route of a race or similar sporting event（赛跑或其他类似比赛项目的）跑道, 路线。
- a dish, or a set of dishes served together, forming one of the successive parts of a meal一道菜：
guests are offered a choice of main course
客人可以自行选择主菜
in combination a four-course meal一顿有四道菜的饭。
- count noun an area of land set aside and prepared for racing, golf, or another sport跑马场; 高尔夫球场; 球场; 比赛场地。
- a series, in particular系列; 连续, 尤指：
- a series of lectures or lessons in a particular subject, typically leading to a qualification（常指可因此得到资格证书的某一学科的）课程：
a business studies course
商务研究课程。
- Medicine a series of repeated treatments or doses of medication【医】疗程：
the doctor prescribed a course of antibiotics.
医生开了一个疗程的抗生素。
- Bell-ringing a series of changes which brings the bells back to their original order, or the changes of a particular bell【鸣钟术】（使所有钟恢复原来排序的）序列编排; （某枚钟的）排序变动。
- Architecture a continuous horizontal layer of brick, stone, or other material in a building【建筑】（砖、石或其他建筑材料的连续水平）层。
- a pursuit of game (especially hares) with greyhounds by sight rather than scent（凭灵𤟥的视觉而非嗅觉的）追踪狩猎（尤指野兔）。
- a sail on the lowest yards of a square-rigged ship（横帆或帆船的）横帆, 大横帆。
- a set of adjacent strings on a guitar, lute, etc., tuned to the same note（吉他、诗琴等上的）一组同音弦。
- no obj., with adverbial of direction(of liquid) move without obstruction; flow（液体）（无阻碍地）流动, 流淌：
tears were coursing down her cheeks
泪水顺着她的面颊流淌下来
figurative 〈喻〉exultation coursed through him.
他狂喜不已。
- with obj. pursue (game, especially hares) with greyhounds using sight rather than scent（凭灵𤟥的视觉而非嗅觉）追踪狩猎（猎物, 尤指野兔）：
many of the hares coursed escaped unharmed
许多受追猎的野兔毫发未损地逃跑了。
no obj. she would course for hares with her greyhounds.她将带着灵𤟥去捉野兔。
a matter of course
- 见MATTER.
the course of nature
- events or processes which are normal and to be expected正常（或预料之中）的事（或过程）：
each man would, in the course of nature, have his private opinions.
每个人通常都有自己的观点。
in course of -
- undergoing the specified process在…过程中, 正在…中：
a new text book was in course of preparation.
新的课本正在准备之中。
- during the specified period在…期间：
he was a friend to many people in the course of his life.
他一生中支持过许多人。
- during and as a part of the specified activity在（某项活动）期间, 作为（某项活动）的一部分：
they became friends in the course of their long walks.
他们在长距离的散步中成了朋友。
in （或over） the course of time
- as time goes by总有一天, 终究; 随着时间的推移：
the property will deteriorate in the course of time.
随着时间的推移, 这座宅邸会慢慢地被风化剥蚀。
in due course
- 见DUE.
of course
- used to introduce an idea or turn of events as being obvious or to be expected（用以引入某个主张或表示事情的转变）显然; 无疑：
the point is of course that the puzzle itself is misleading.
当然, 问题是这个谜本身就是误导人的。
- used to give or emphasize agreement or permission［用于表示或强调认同或许可］当然可以, 理所当然：
'Can I see you for a minute?' 'Of course.'
“我能见你一会儿吗？”“当然。”
- introducing a qualification or admission表示有某种保留意见或承认某事当然：
of course we've been in touch by phone, but I wanted to see things for myself.
当然, 我们已打电话联系过了, 但我想亲自了解一下情况。
off course
- not following the intended route偏离航向, 偏航; 偏离方向：
the car went careering off course.
汽车偏离着方向一路狂奔而去。
on course
- following the intended route在正确的航向（或方向）上：
he battled to keep the ship on course
他拼搏着不让船偏离航向
figurative 〈喻〉to get back on course, I relied on one of my stock questions.
我借着一个老套的问题回到了正题。
on course for/to do something
likely to achieve something可能会做成某事：he was on course for victory.
他可能获胜。
run（或 take）its course
- complete its natural development without interference完成自身的发展阶段：
his illness had to run its course to the crisis.
他的病在危情到来之前只得听其自然。