Pera
n. 啤梨
🗣️ 情景例句
What time is it?
现在是什么时间了？
Excuse me. Could you give me change for a dollar?
劳驾，你能不能换1元零钱给我？
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）