Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
A、straightTheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.
Eyespots, the most rudimentary eyes, are found in protozoan原生動(dòng)物 flagellates 鞭毛蟲 , flatworms 扁形蟲 , and segmented worms片段 蠕蟲 .
Urban renewal programs strive to upgrade areas that are becoming slums.
In calculating the daily calorie requirements for an individual, variations in body size, physical activity, and age should be taken into account.
Mary McCarthy s satires 諷刺文學(xué) are couched in a prose style that has a classic precision.
