Even seasoned geologists struggle to fathom the immense timescales involved in the formation of mountain ranges.
即使是经验丰富的地质学家也难以理解山脉形成所涉及的漫长时间尺度。
Which choice best defines “fathom”?
C — To understand deeply; to measure depth.. “fathom” means To understand deeply; to measure depth..
Which word means “To understand deeply; to measure depth.”?
A — fathom. “fathom” means To understand deeply; to measure depth..
fathom — To understand deeply; to measure depth.. In Chinese: 理解；测量（深度）.
fathom is pronounced //ˈfæðəm//.
Even seasoned geologists struggle to fathom the immense timescales involved in the formation of mountain ranges. (即使是经验丰富的地质学家也难以理解山脉形成所涉及的漫长时间尺度。)
comprehend, grasp, penetrate — all close in meaning to fathom (To understand deeply; to measure depth.).
misunderstand, confuse — each the opposite of fathom (To understand deeply; to measure depth.).
Yes. fathom is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. 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.
fathom(英寻) → 探到底 → 弄懂。