Someanimalspantandsweattospeedevaporationofbodymoistureandthuscoolthemselves.

Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野

Eyespots,themostrudimentaryeyes,arefoundinprotozoan原生动物flagellates鞭毛虫,flatworms扁形虫,andsegmentedworms片段蠕虫.

Thefearofsmallpox,whichterrorizedtheeighteenthcentury,hasnoanalogy(likeness)today.

Theflowerbudofawaterlily百合opensatsunsetsince.itsopeningistriggered(commence).bythedecreasedlight.