Despite decades of research, a definitive cure for the common cold remains elusive, as the virus constantly mutates.
尽管经过数十年的研究，普通感冒的根治方法仍然难以捉摸，因为病毒不断变异。
Which choice best defines “elusive”?
B — Hard to catch, grasp, or define.. “elusive” means Hard to catch, grasp, or define..
Which word means “Hard to catch, grasp, or define.”?
A — elusive. “elusive” means Hard to catch, grasp, or define..
elusive — Hard to catch, grasp, or define.. In Chinese: 难以捉摸的；易忘的.
elusive is pronounced //ɪˈluːsɪv//.
Despite decades of research, a definitive cure for the common cold remains elusive, as the virus constantly mutates. (尽管经过数十年的研究，普通感冒的根治方法仍然难以捉摸，因为病毒不断变异。)
slippery, evasive, intangible — all close in meaning to elusive (Hard to catch, grasp, or define.).
accessible, tangible — each the opposite of elusive (Hard to catch, grasp, or define.).
Yes. elusive 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.
同 elude → 捉摸不定的。