Positive infinitely variable driving gear
[机] 无限变速传动装置, PIV传动装置
🧩 词语组成解析
positive
['pɑzətɪv]
adj. 积极的;确实的，肯定的;[数]正的;[医]阳性的;
n. 正面;正片;[语]原级形容词;[数]正量;
posit肯定+ive形容词后缀 → 肯定的；积极的
driving
['draiviŋ]
n. 操纵，驾驶;
adj. 推进的;强劲的;雨、雪等猛烈的;倾泻而下的;
v. 强迫( drive的现在分词);驱使;驱赶;消除;
gear
[ɡɪr]
n. 齿轮;排挡;传动装置;衣服 ;
vi. 接上;调和;
vt. 使适应;装上齿轮;用齿轮连接;
🗣️ 情景例句
No harm done.
没什么。
Do you often play tennis on Sunday?
你常常在星期日打网球吗？
but although our faith in many of the things in which our forefathers fervently believed has weakened,
可是虽然我们对我们祖先笃信的许多事物已不太相信，