🧩 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
🗣️ 情景例句
They concluded that the goods were of good quality and proved no problem.
他们断定货物质地优良，并证明没有任何问题。
How long have you been studying English?
你学了多长时间的英语了？
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
气垫船在非洲、澳大利亚等交通不发达地区特别有用。