英语翻译They were an advanced agricultural people who used irrig

英语翻译
They were an advanced agricultural people who used irrigation to help grow their crops.
With the advent of power-driven machinery ,home industry began to give way to production in mills and factories.
Self-image can be indicated by a tone of voice that is confident,shy,or aggressive.
You increase your exposure to airborne viruses just when your body's resisitance is already low.
Ecologists would probably be alarmed by the scientists' findings.