B2 not natural不自然的；勉強的；反常的
- Her translation is too literal , resulting in heavy, unnatural prose.
- The dialogue sounded stilted and unnatural, perhaps because of the translation from the original Russian.
- The daffodils are already coming out, which seems unnatural for so early in the year.
- It would be unnatural not to feel concerned for your children's future.
- She's died her hair in an attempt to cover up the grey, but it looks unnatural.