Definition: the piece of skin that covers your eyes when you close them Level: B2
婴儿入睡时眼皮在颤动。
The baby's ___eyelids fluttered as he fell asleep.
一只蚊子落在她的眼皮上，吓了她一跳。
A mosquito landed on her ___eyelid, startling her.
在无聊的讲座中，他努力保持眼皮睁开。
He tried to keep his ___eyelids open during the boring lecture.
