Pendulum
[ 'p?nd??l?m ]
第5級
其它 Other
n. 擺，鐘擺;搖擺不定的事態(tài)（或局面）;
?? 詞根助記
Pend懸掛+ulum東西→擺著的東西→鐘擺
?? 例句
The swing is a pendulum with a single natural frequency depending on its length.
秋千是只有一個固有頻率的擺，此頻率決定于它的長度。
The present device is also called a conical pendulum.
上述裝置也稱為圓錐擺。
A grandfather clock has a pendulum that helps it work.
落地大座鐘有一個幫助擺動的鐘擺。
Then the pendulum boom and the pendulum are in equilibrium in any position.
則擺桿和擺在任何位置都處于平衡狀態(tài)。
?? 聯(lián)想助記
【記】※ 諧音“破舊了嗎”:鐘擺破舊了嗎
※ pen-鋼筆,du-拼音“堵”,lum-拼音“路面”:鐘擺和鋼筆堵住了路面
※ pen-鋼筆,dulum-拼音“杜魯門”:鋼筆和鐘擺是送給杜魯門總統(tǒng)的禮物
?? 詞根
-pend-表示“懸掛”
常見變體有-pens-
?? 牛津釋義
pendulum
n
1 weight hung on a cord from a fixed point so that it can swing freely 擺; 擺錘.
2 rod with a weight at the bottom that regulates the mechanism of a clock 鐘擺. =>illus 見插圖.
3 (idm 習(xí)語) the swing of the pendulum => swing2.
?? 考研助記
在下面(de)懸掛(pend)叫 依靠depend-pend懸掛 a(=to)+pend+ix-appendix 附屬物 sus(=under)+pend-suspend 懸掛 暫停營業(yè) pend+ulum-pendulum 鐘擺
?? 醫(yī)學(xué)釋義
擺（錘），振動體
?? 同詞根單詞
?? 同為「博士」詞匯
查看全部博士詞匯 ›??? 情景例句
At this time tomorrow morning,Grandpa will be sitting in the kitchen with us.
明早這時候爺爺就和我們一起坐在廚房啦。
Sorry, I guess I wasn't thinking. I won't do it again.
對不起。我對這事沒想過，下次不這樣了。
A long time ago, one of his ancestors who lived in Africa went into the forest to cut down a tree to make a drum.
很久以前，他那生活在非洲的祖先中有一人走進森林去砍樹來做鼓。