Positive cam
[机] 确动凸轮
🧩 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
n. 凸轮, 计算机辅助制造, 中央地址存储器\\n[计] 计算机辅助制造; 计算机辅助生产
🗣️ 情景例句
I am also glad to be here.
我很高兴来这里 。
What will you do to help protect our environment from being seriously polluted?
你将为帮助保护我们的环境免遭到污染做些什么呢？
I told her that either I would have to buy a new mower or let the grass grow.
我告诉她，要么买一台新割草机，要么让草长下去。