knowledge 可数吗? common knowledge (常识)可数吗? 造2个句,谢谢.

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knowledge 可数吗? common knowledge (常识)可数吗? 造2个句,谢谢.
knowledge 可数吗? common knowledge (常识)可数吗? 造2个句,谢谢.

knowledge 可数吗? common knowledge (常识)可数吗? 造2个句,谢谢.
有这样的用法:a good knowledge of 意为:通晓,对、、很了解,
常与 have/acquire/obtain/develop 等动词搭配
但是knowledge它本身是不可数的
common knowledge同样不可数
This is common knowledge,but a lot of people tend to ignore it.
It is common knowledge that fish can't live without water.