ฉันไม่ค่อยแน่ใจว่าในอีก20ปีข้างหน้า

I'm not sure that in another 20 years ahead, there will be something happen. Perhaps there is a technology developed to increase human comfort but although human invention of new technologies, but they do not help to a better environment! We love the convenience over conservation.

I'm not sure that in the next 20 years there will be nothing happening. Perhaps the technology developed for the greater good of mankind. But even if the human invention of new technology. But they did not help the environment better. We love the convenience, rather than conservation.

I'm not sure that in the next 20 years will happen. Perhaps there is a technology developed for the comfort of the human being increased. But even though humans invented new technologies. But they don't help the environment better.