Preventive maintenance contract
[计] 预防性维护合同
🧩 词语组成解析
preventive
[pri'ventiv, pri:-]
n. 预防;防止;预防措施;预防药;
adj. 预防的;防止的;
🗣️ 情景例句
Absolutely right, Betty.
完全正确， Betty。
To hear a hundred times is not so good as to see once.
百闻不如一见。
Yes, speaking.
是我，请讲。