求翻译：但是，每一件事都有两面性，石油的开发也带来了许多问题。石油基本靠海洋运输，它的泄露直接污染了海洋环境，使许多海洋生物灭绝。是什么意思？

However, everything has two sides, the development of oil has also brought many problems. Basically rely on marine transportation of oil, which leaked direct pollution of the marine environment, the extinction of many marine organisms.

However, everything has two faces, oil development has also brought about many problems. Oil basic depended on the sea transport, and it leaks in the marine environment To direct the pollution many marine life.

But, each matter all had the dual character, the petroleum development has also brought many questions.The petroleum depends on the sea transportation basically, its revelation has polluted the marine environment directly, causes many marine life to exterminate.

However, everything has two sides, oil development has also brought a lot of problems. Basic maritime transport of oil, it leaked direct contamination of the marine environment, so that many extinction of marine life.

However, everything has two sides, the development of oil has also brought many problems. Basically rely on marine transportation of oil, which leaked direct pollution of the marine environment, the extinction of many marine organisms.