Satellite records show that Earth's magnetic field has weakened measurably over the past two centuries.
卫星记录显示，地球的磁场在过去两个世纪里明显减弱。
- Ground-based telescopes must look through Earth's atmosphere, which distorts and blurs incoming starlight.
From a Rhetorical Synthesis question · Expression of Ideas
Which choice best defines “earth's”?
C — Possessive form of earth, relating to the planet. “earth's” means possessive form of earth, relating to the planet.
Which word means “possessive form of earth, relating to the planet”?
C — earth's. “earth's” means possessive form of earth, relating to the planet.
earth's — possessive form of earth, relating to the planet. In Chinese: 地球的.
earth's is pronounced /ɜːrθs/.
Satellite records show that Earth's magnetic field has weakened measurably over the past two centuries. (卫星记录显示，地球的磁场在过去两个世纪里明显减弱。)
terrestrial, planetary, global — all close in meaning to earth's (possessive form of earth, relating to the planet).
Yes. earth's is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.