VOA慢速英语:科学家们报告了稀有青蛙和配偶之间的“约会”进展

species – n. group of plants or animals that share similar characteristics

amphibian – n. type of animal that lives both on land and in water

fate – n. the things that will happen to a person

commit – v. make a firm decision to do something

impress – v. make someone admire of respect you

certain – adj. completely sure about something

fertilize – v. to cause an egg to start to develop into a young animal or baby by combining it with a male cell

reveal – v. to make (something) known