This is a polite way of saying that Adam had sexual relations with his wife. You may need to use another euphemism in your language. See how you translated this in [Genesis 4:1](../04/01.md). (See: [[rc://en/ta/man/jit/figs-euphemism]])
This is the reason that she named him Seth. This can be made explicit. Alternate translation: "explained, 'God has given me another child" (See: [[rc://en/ta/man/jit/figs-explicit]])