83 sentences — page 5 of 5

81. 碳是地球上所有生命体都含有的基本元素。

    tàn shì dì​qiú shàng suǒ​yǒu shēng​mìng tǐ dōu hán​yǒu de jī​běn yuán​sù.

    Carbon is a fundamental element found in all life forms on Earth.

    Source: Dong Chinese Dictionary

82. 地球表面的四分之三是海洋，四分之一是陆地。

    dì​qiú biǎo​miàn de sì fēn​zhī sān shì hǎi​yáng, sì fēn​zhī yī shì lù​dì.

    Three-quarters of the Earth's surface is ocean, and one-quarter is land.

    Source: Dong Chinese Dictionary

83. 地震学家通过分析地震波的走时来研究地球内部结构。

    dì​zhèn​xué​jiā tōng​guò fēn​xī dì​zhèn​bō de zǒu​shí lái yán​jiū dì​qiú nèi​bù jié​gòu.

    Seismologists study the Earth's internal structure by analyzing the travel time of seismic waves.

    Source: Dong Chinese Dictionary