Many scientists try to find the secrets of ___.
(A) malady
(B) longevity
(C) friction
(D) procedure

答案：登入後查看
統計： A(14), B(111), C(19), D(21), E(0) #365285

詳解 (共 1 筆)

#471743

malady 病, 疾病

longevity 長命, 長壽

friction摩擦; 摩擦力[U]


 

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