Certificate of security
[经] 保证单
🧩 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];
🗣️ 情景例句
Nobody. That's the problem.
没有人。这就是问题所在。
Do you think you could lend me some of your records/CDs?
请问你能借我几张唱片吗？
Accurate, don't you think? Fortunately, I wasn't wearing it at the time.
真够准的，是不是？幸亏我当时没戴帽子。