🧩 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
You can probably afford this one.
你可能负担得起这栋房子。
Lend your money and lose your friend.
赔了夫人又折兵。
I was very tired when I arrived home. I'd been working hard all day.
我到家时非常累。我一整天都在玩命地干！