Correct or improve the translation of the following Chinese sent

Correct or improve the translation of the following Chinese sentences.原文：他们所形象描绘的不是石油泄漏，而是可能引起疾病扩散以至毁灭全人类的微生物泄露。译文：They don't create images of oil spills, but of "microbe spills" that could spread disease and destroy entire populations.
【正确答案】：

THEY CREATE IMAGES NOT OF OIL SPILLS, BUT OF "MICROBE SPILLS" THAT COULD SPREAD DISEASE AND DESTROY ENTIRE POPULATIONS.

【题目解析】：本题考查“不是…而是...”结构的翻译。“not…but…”结构置于句中时，not不应以助动词的否定式出现，且not和but在句中的位置需要保持一致。