Maintenance free
[化] 不需维修的
🧩 词语组成解析
free
[fri]
adj. 自由的;免费的;免税的;空闲的;
adv. 免费地;自由地，无拘束地;一帆风顺地;
vt. 免除;释放;使自由;解救;
🗣️ 情景例句
I thought he was retired
我原以为他退休了
Mountain-climbing is difficult.
登山是困难的事。
You have to learn when to ask for help and when to ask for information.
你得学会什么时候请求帮助，什么时候打听信息。