例句
柯林斯高阶英汉双解学习词典释义
  • N-COUNT
    切线
    A tangent is a line that touches the edge of a curve or circle at one point, but does not cross it.
  • PHRASE
    突然偏离原来的思路;突然离题
    If someone goes off at a tangent, they start saying or doing something that is not directly connected with what they were saying or doing before.
    例句
    The conversation went off at a tangent. 交谈突然偏离了正题。