underneath1/͵ʌndɚˋniθ; ˌʌndəˈniːθ/prep , adv 1 directly under another object or covered by it 在…下面﹔在…底下: I found the keys underneath a cushion. 我在一个靠垫下面找到了钥匙。She was wearing a jacket with a T-shirt underneath. 她穿了一件夹克﹐里面是一件 T 恤。2 on the lower surface of something 在底面﹔在下面: The car was rusty underneath. 这辆车的底部生锈了。3 used to say what someone is really like, when their behaviour does not show this〔人〕本质上: I think he's a nice person underneath. 我觉得他本质上是个好人。
underneath2n the underneath the bottom surface of something 底部﹐底面