In 1974 Henry Aaron broke Babe Ruth's monumental lifetime record of 714 home runs.
A、archaic(old,antique)C
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Somechildrendisplayanunquenchable難以抑制的curiosityabouteverynewthingtheyencounter.
Eyespots, the most rudimentary eyes, are found in protozoan原生動物 flagellates 鞭毛蟲 , flatworms 扁形蟲 , and segmented worms片段 蠕蟲 .
The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.
The wheels of the first road vehicles were fashioned from crude stone disks.
Communication is one of the most important bonds that hold cultural systems together.
