劣弧

lièhú 〔名〕小于半圆的弧(区别于“优弧”)。

• 雷利
• 雷动
• 雷区
• 雷厉风行
• 雷同
• 雷场
• 雷声大, 雨点小
• 雷声大，雨点小
• 雷姆
• 雷害
• 雷射
• 雷尼
• 雷峰
• 雷峰塔
• 雷峰夕照
• 雷州半岛
• 雷德尔
• 雷恩
• 雷打不动
• 雷文
• 雷明顿
• 雷暴
• 雷暴雨
• 雷殛
• 雷汞
• keep in contact/touch with
• keep in mind
• keep in one's head
• keep in with
• keep off
• keep on
• keep one's distance
• keep one's eyes on
• keep one's eyes open
• keep one's head
• keep one's mind on
• keep one's mouth shut
• keep one's temper
• keep one's word
• keep open house
• keep out
• keep out of
• keep pace with
• keep quiet
• keep to
• keep to oneself
• keep track of
• keep under
• keep under observation
• keep under one's hat