Term of validity
[化] 有效期间\\n[经] 有效期限
🧩 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];
🗣️ 情景例句
Of course, I'll visit at least once a year, maybe more.
当然，我最少每年会来拜访一次，也许更多次。
Only that which is honestly got is gain.
正当的收入才是真正的收入。
but it suddenly caught sight of the drunk who was shouting rude remarks and waving a red cap.
但突然它看见了醉汉，只见他正大声说着粗鲁的话，手里挥动着一顶红帽子。