Complex sentence: According to the Torah, mammals that "both" chew their cud (ruminate) and have cloven hooves, such as cattle, goats and sheep, are kosher; while those that have only one of the two characteristics are impure and cannot be consumed.
Split into simpler sentences: According to the Torah, land-dwelling animals that "both" chew their cud (ruminate) and have cloven hooves, are kosher. Those mammals that have only one of the two characteristics are impure and cannot be consumed.