?? 詞語組成解析
abbr. 研究與開發處(Office for Research and Development);運籌學部(Operational Research Division0;旋光色散譜, 旋光分散作用(Optical Rotatory Dispersion)
kangaroo
[,k??ɡ?'ru]
n. [動]袋鼠;
rat
[r?t]
n. 大老鼠;似鼠動物;<非正式>鼠輩,卑鄙小人;
vi. 捕鼠;<俚>背叛,告密;
??? 情景例句
Genes are the very building blocks of life.
基因是生命最基本的構建者。
Master should be soetimes blind and sometimes deaf.
不癡不聾,不作阿家翁。
My parents used to live in South America and I used to fly there from Europe in the holidays.
我的父母曾經住在南美洲,所以假期里我常從歐洲乘飛機到他們那里。