🧩 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
Are the beaches safe for swimming?
在这儿的海滩游泳安全吗？
What did you talk about?
你们谈论了什么？
We would've called a taxi if Liz hadn't offered us a ride home.
假如李兹不送我们回家，我们就打的了。