Certificating
vt. 发给证明书（certificate的现在分词形式）
🗣️ 情景例句
Where is your birthplace?
你出生在哪里？
Now, seeing them all here together for the first time.
现在他们都到了这里。
Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.
它们随船飞行一小时也难得见其扇动一下翅膀。