He was—what is the phrase I’m looking for—not intimately acquainted with his subject.
他——

么说呢——对自己的主题很不熟悉。
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Next one is from black American slang it's entered the mainstream English language and it is mojo Yeah, well, I think many people of my age group were acquainted with this phrase because of the film series Austin Powers.
下一个来自美国黑人俚语,
已经进入了主流英语,
mojo。
的,嗯,我想我这个年龄段的许多人都知道这个短语,因为电影系列 Austin Powers。
Others say " actions speak louder than words" , usually in relation to keeping promises, paying bills or sending money home. Because people assume " you are what you say you are" , they talk a lot to become acquainted with each other.
还有一些人说“说得好不如做得好”,这通常与信守诺言、付账、以及寄钱回家等行为相关。由于人们以为“对你的了解
通过你的言谈”,他们就通过大量的交谈去结识对方。