VOA慢速英语:保护努力帮助山地猩猩种群增长

extinction – n. when a type of animal no longer exists

critically – adj. extremely serious or dangerous

conservation – n. the protection of nature

engagement – n. the act or state of being involved in something

habitat –n. the place or kind of place where a plant or animal naturally or normally lives

type –n. a particular kind or group of things or people

commercial – adj. related to buying and selling things

vulnerable – adj. easy to harm or attack