n.[C]

1. 列车，火车
   She came by train.

   她是乘火车来的。

2. （行进中的）长列，队列
3. 下摆，裙裾；后拖物
4. 一连串，系列[（+of）]
   The sudden noise from the next room interrupted my train of thought.

   从隔壁房间突然传来的闹声打断了我的思路。

5. 随从[U]

vt.

1. 训练，培养[O2][（+as/in/for）]
   The firm trained its employees to be more efficient.

   公司培训员工，使他们办事效率更高。

   She was trained for nursing.

   她被培养成护士。

   Mother trained us to be honest.

   母亲教育我们为人要诚实。

   We train them to make use of reference books.

   我们训练他们使用参考书。

2. 使（植物）沿着一定方向生长
3. 把……对准，瞄准[（+on）]
   She trained her camera on the caged panda.

   她把照相机对准笼子里的熊猫。

vi.

1. 接受训练，锻炼[（+as/for）][+to-v]
   He is training for the ministry.

   他正在接受培训，准备做牧师。

   They are training for the boat race.

   他们正在为划船比赛接受训练。

v.

1. teach (a person or animal) a skill or type of behaviour through regular practice and instruction.
   ▸be taught in such a way.
2. make or become physically fit through a course of exercise and diet.
3. (train something on) point or aim something at.
4. cause (a plant) to grow in a particular direction or into a required shape.
5. dated go by train.
6. archaic entice (someone).

n.

1. a series of railway carriages or wagons moved as a unit by a locomotive or by integral motors.
2. a number of vehicles or pack animals moving in a line.
   ▸a retinue of attendants accompanying an important person.
3. a series of connected events or thoughts.
4. a long piece of trailing material attached to the back of a formal dress or robe.
5. a series of gears or other connected parts in machinery.
6. a trail of gunpowder for firing an explosive charge.