Documentary evidence of origin
[经] 证明原产地单证
🧩 词语组成解析
documentary
['dɑkjə'mɛntri]
n. 纪录片;
adj. 记录的;文书的;纪实的;
docu[=doc教]+ment名词后缀+ary…的 → 用来告诉别人的 → 公文的，文件的，记录的，记录的
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
What time do you usually have supper?
你通常几点吃晚餐？
He washes dresses every day.
他每天都洗衣服。
'He had travelled only seven miles across the Channel when his engine failed and he was forced to land on sea.
但他只在海峡上空飞行7英里，引擎就发生了故障，他只好降落在海面上。