1. （使）停止行进;（使）停住
    When a person or a vehicle halts or when something halts them, they stop moving in the direction they were going and stand still.

    e.g. They halted at a short distance from the house...
           他们在离房子不远处停了下来。
    e.g. The engine note changed as the aircraft landed, taxied and halted...
           发动机的声音随着飞机着陆、滑行和停下一直在变化。

2. （使）（生长、发展、活动等）停止（或中止）
    When something such as growth, development, or activity halts or when you halt it, it stops completely.

halt的解释

    e.g. Striking workers halted production at the auto plant yesterday...
           罢工工人于昨日停止了汽车厂的生产。
    e.g. He criticised the government for failing to halt economic decline...
           他批评政府未能遏止经济下滑。

3. （军队口令）立定！站住！停止前进！
    'Halt!' is a military order to stop walking or marching and stand still.

    e.g. The colonel ordered 'Halt!'
           上校命令道：“立定！”

4. （只有小型站台、无建筑物的)小火车站
    A halt is a very small station on a country railway line, which often consists only of a short platform and no building.

5. 下令停止;叫停
    If someone calls a halt to something such as an activity, they decide not to continue with it or to end it immediately.

    e.g. The Russian government had called a halt to the construction of a new project in the Rostov region.
           俄罗斯政府已叫停了罗斯托夫地区的一个新工程。

6. 停止移动;停下
    If someone or something comes to a halt, they stop moving.

    e.g. Sofia and Alex came to a halt and both tried to regain their breath...
           索菲娅和亚历克斯停了下来，两人都想喘口气。
    e.g. The elevator creaked to a halt at the ground floor.
           电梯嘎吱一声停在了一层。

7. （使）（生长、发展、活动等）完全停止
    If something such as growth, development, or activity comes or grinds to a halt or is brought to a halt, it stops completely.

    e.g. Her political career came to a halt in December 1988...
           她的政治生涯于1988年12月画上了句号。
    e.g. Air traffic in Poland has been brought to a halt by an air traffic controllers' strike.
           由于航空调度员罢工，波兰的空中交通已完全瘫痪。