Validity of treaties
[法] 条约的有效性, 条约效力
🧩 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];
n. 条约；协定问题（treaty的复数）
🗣️ 情景例句
I'm sorry, but I've got to be on my way.
很抱歉，我必须走了。
Are you going to use cash or traveller's cheques?
您是用现钞换呢，还是用旅行支票换？
The ideal to be aimed at was to devise an instrument that could record with a pen on paper,
当地震发生时，它能用笔在纸上记录下