🧩 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
How much for a haircut?
理发多少钱?
Do you know what the population of Japan is?
你知道日本的人口是多少吗?
The building of skyscrapers in New York began around the year 1900.
在1900年左右,摩天楼开始在纽约兴建。