Certificate of posting
[经] 邮寄证明
🧩 词语组成解析
certificate
[sɚ'tɪfɪkət]
n. 证明书;文凭，结业证书;
vt. 发给证明书;用证书证明（或认可）;
cert 搞清 + ifi=fy表动词 + cate表名词 → certify搞清楚=证明+ cate表名词 → 证件
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];
posting
['pəustiŋ]
n. 记录;[会计]过帐，记账;委派;
v. 邮寄;张贴(post的现在分词);公布;
🗣️ 情景例句
You were four or five years old, I think.
当时你才四、五岁 我想。
I tried to telephone you but I couldn't get through.
我试着打电话给你，但都没有打通。
and they provided a striking demonstration of the potentialities hidden in instruments and apparatus.
并充分显示出了仪表和仪器的潜在力量。