慢速英语:研究称富含碳的行星可能由钻石构成

音频下载[点击右键另存为]

ratio – n. the relationship between two things expressed in numbers

convert – v. to change the appearance or purpose of something

sample – n. a small amount of something that gives you information about the thing it was taken from

geology – n. the study of rocks and soil and the physical structure of the Earth

interpret – v. explain the meaning of something

mission – n. an important task, usually involving travel somewhere