naturalgas天然气naturaladj.自然的；天然的；私生的natural potential自然电位natural variation自然变异natural epizootic自然流行natural abundance天然丰度,自然丰度natural gas wells天然气井natural gas drive天然气驱natural disasters天灾,自然灾害natural existence自然存在物natural condiment天然调味料natural coagulant天然净水剂

1. Drinking this soda water can adjust the balance of human acidity and alkali, help people in good condition.
   饮用天然苏打水，可以调节人体酸碱平衡，促身体健康。