The thin atmosphere held secrets to unlock.

Meaning: The layer of gases around Mars contained information that scientists wanted to learn more about.

Choice of Words: Atmosphere refers to the layer of gases surrounding a planet, while held means to have or possess something. Unlock means to open or reveal something that is hidden or secret.

Alternative Expressions

The delicate air held mysteries waiting to be uncovered.

Meaning: This means that there are hidden things in the air around the Earth that can be found out or learned.

Choice of Words: Delicate means something that is fragile or easily damaged. Air is the atmosphere around the Earth or another planet. Held means to have or keep something. Mysteries are things that are puzzling or difficult to understand. Uncovered means to reveal or make known something that is hidden. So, the sentence means that the delicate air around the Earth contains secrets that are waiting to be discovered.

The rarefied air concealed secrets ripe for discovery.

Meaning: This means that there are hidden things in the air around the Earth that can be found out or learned.

Choice of Words: Rarefied means something that is thin or less dense. Air is the atmosphere around the Earth or another planet. Concealed means to hide or keep something secret. Secrets are things that are kept hidden or unknown. Ripe means ready to be picked or used. Discovery means the act of finding out or learning something new. So, the sentence means that the thin air around the Earth contains secrets that are ready to be found out.

Related Expressions