Of avail
有用,有效,有帮助
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
avail
[ə'veil]
n. 效用，利益;
vt.& vi. 有益于，有益于;使对某人有利;
🗣️ 情景例句
Rome wasn't built in a day.
冰冻三尺，非一日之寒。
Idleness is the key of beggary, and the root of all evil.
懒惰是行乞的敲门砖，是万恶的根源。
What happened before printing was invented?
印刷术发明以前是怎么一回事？