I spoke from the pulpit ad lib.
我在讲坛上做了即兴发言。
Help yourself. You are AD lib here.
请自便，在这里你不受限制。
I have forget to bring my note and have to speak ad lib.
我忘记带讲稿了， 只好临时讲几句。答案。
I lost my notes and had to ad-lib the whole speech.
我把讲稿丢了，只好临时说了一通。
I lost my notes and had to ad-lib the whole speech.
我把讲稿丢了，只好临时说了一通。
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