wo jue de shi jie shang you hen duo huan jing wen ti. ying guo bu dan kong qi wu ran wen ti er qie shui wu ran wen ti, zhong guo you kong qi wu ran wen ti, fei zhou yo shi pin wu ran wen ti, ya zhou la ji wu ran wen ti. yin wei you wu ran, wo men mei you gan jing de shi wu he shui. wo jue de zhe xie wen ti fei chang zao gao, yin wei ru guo mei you shi wu he shui, wo men hui si, dong wu ye hui se. suo yi wo men yao bao hu huan jing.