To understand the complex ecosystem of a coral reef, marine biologists study the interactions among its many species.
为了理解珊瑚礁复杂的生态系统，海洋生物学家研究其众多物种之间的相互作用。
• Scientists study it to understand tissue regeneration in humans.
From a Rhetorical Synthesis question · Expression of Ideas
Theater historian Boris Kaminski, who has studied similar modern-dress productions elsewhere, cautions that updating a play's setting can sometimes obscure historical context that is essential to understanding certain plot points and character motivations.
From a Cross-Text Connections question · Craft and Structure
Scientists studying this regeneration hope that understanding the axolotl's genetic mechanisms could eventually inform new treatments for human tissue repair.
From a Central Ideas and Details question · Information and Ideas
Which choice best defines “understand”?
B — To know the meaning of something. “understand” means to know the meaning of something.
Which word means “to know the meaning of something”?
B — understand. “understand” means to know the meaning of something.
understand — to know the meaning of something. In Chinese: 理解.
understand is pronounced /ˌʌndərˈstænd/.
To understand the complex ecosystem of a coral reef, marine biologists study the interactions among its many species. (为了理解珊瑚礁复杂的生态系统，海洋生物学家研究其众多物种之间的相互作用。)
comprehend, grasp, perceive — all close in meaning to understand (to know the meaning of something).
misunderstand, misconstrue — each the opposite of understand (to know the meaning of something).
Yes. understand 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.