Spur wheel
n. 正齿轮
🧩 词语组成解析
spur
[spɝ]
n. 马刺;激励因素;支柱;（公路或铁路的）支线;
vt. 策（马）前进;（尤指用马刺）策（马）加速;鞭策;
vi. 策马飞奔;急速前进;
wheel
[wil]
n. 轮子;旋转;Wheels 汽车;有…轮子的汽车（或自行车等）;
vi. 转动，旋转;突然转变方向;
vt. 推;拉（车）;使变换方向;（使）迅速转身;
🗣️ 情景例句
The rich few nations of this world take up the vast majority of the wealth and resources.
少数几个富裕的国家占有了大多数的财富和资源。
David would get up early in the morning to deliver newspaper.
戴维一早起床就去送报纸。
Perhaps more than half a year.
大约半年多吧。