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
The old library building on Chestnut Street,
Chestnut街老图书馆，
Everyone is dissatisfied with his own fortune.
人对自己的命运总不感满足。
Everybody on board was worried and we were curious to find out what had happened.
飞机上的人都很着急，大家都急于想知道究竟出了什么事。