🧩 词语组成解析
abbr. 研究与开发处（Office for Research and Development）；运筹学部（Operational Research Division0；旋光色散谱, 旋光分散作用（Optical Rotatory Dispersion）
kangaroo
[,kæŋɡə'ru]
n. [动]袋鼠;
rat
[ræt]
n. 大老鼠;似鼠动物;<非正式>鼠辈，卑鄙小人;
vi. 捕鼠;<俚>背叛，告密;
🗣️ 情景例句
The odds are she'll decline the invitation.
恐怕她会谢绝邀请。
Just a short line to say thanks.
只言片语聊表谢意。
said Jim. Somebody or something took it. We won't go until we get it back again!
吉姆说，“什么人或者什么东西把它拿走了。不把它找回来我们就不走！”