[译] 心脏病发作前他一直身体健康。
[误] He was in good health prior to the attack of heart trouble.

[正] He was in good health prior to the onset of heart trouble.
[注]名词attack与onset都可以表示疾病“发作”，但onset指初次“发作”，又如：There were already slight symptoms a few days prior to the onset of this disease.本病发作前几天已出现轻微症状。attack常指复发的“发作”，如：Attacks became progressively frequent, up to once in 3 ~ 5 days before admission. 发作次数增加，入院前3~5天一次。