Radial symmetry

radial ['redɪəl]

adj. 辐射状的;放射式的;径向的;星形的; n. 子午线轮胎，辐射状轮胎;

radi 表”射线,辐射,广播”

symmetry ['sɪmətri]

n. 对称;对称美;整齐，匀称;

sym共同，相同+metry测量→两边测量一样→对称

She won the first place in a speech contest.

她在演讲比赛中获得很第一名。

Children are the parents' riches.

子女是父母的至宝。

Some stories are for swallowing. Imagine that you have found a good story, and, what is even more important, the time to enjoy it. You might be on holiday, or on a long train journey. If it is a good book, you might say, It's so good I can't put it dow

“这本书太好了，我舍不得把它放下。”但是并非所有的故事书都属于这一类。书评家们有时把一些书说成是“难以释手”的书，或者是“难以再读”的书。