Nine deaths and nine lives: of great significance. Describe surviving in great danger. It is also described in "Do or die", and the situation is very critical. As predicate and attribute; Represents a person's experience.

Nine Niu Yi hairs, one hair on nine cows. Metaphor is a very small number in a very large number, which is insignificant. As subject, object and attribute; Metaphor is insignificant.

Nine hairs on nine cows in Niu Yi. Metaphor is a very small number in a very large number, which is insignificant. As subject, object and attribute; Tiny, insignificant.

10% off and 10% off: 10% off and 10% off. Metaphor is failure. As objects and attributes; Used in figurative sentences.