例句與造句

1. During holocene , horqin sandy land had several periods of sandy land reduces affected by global climatic undulation , in which the first reduce period during warm time of holocene profoundly influenced the hongshan culture in xiliao river upstream
   摘要科爾沁沙地在全新世期間，受到全球氣候波動的影響，有過多次沙漠化逆轉(zhuǎn)期，其中發(fā)生在全新世大暖期的第一次大規(guī)模逆轉(zhuǎn)對西遼河上游地區(qū)紅山文化產(chǎn)生了深遠(yuǎn)的影響。
2. It's difficult to find reducing period in a sentence. 用reducing period造句挺難的