博茨瓦纳训练狗狗来保护野生动物

contraband – n. things that are brought into or out of a country illegally

resource – n. something that a country has and can use to increase its wealth

species – n. a group of animals or plants that are similar and can produce young animals or plants

ecosystem – n. An ecosystem includes living things, such as plants and animals, and things that are not living, such as rocks, soil, sunlight, and water.

contribute – v. to give or provide

bribe – v. giving money or something else to influence the behavior of someone else

master – v. to become killed at something

canine – adj. of or related to dogs