+ plus
- minus
multiplied by ;times
divided by
= equals
approximately equals
not equal to
less than
greater than
equal to or less than
equal to or greater than
round brackets ;parentheses
square brackets
{ }braces
is a member of the set
is a subset of
∽ similar to
≌ congruent to
denotes an operation
therefore
∵ because
∶ ratio sign, divided by
雅思口语素材:名人名言-罗切福考尔德
雅思口语范文:节日介绍-七夕
雅思口语高频话题:一个有水的地方
雅思口语素材:好句推荐-用行动说话
雅思口语范文:节日的意义
雅思口语高频话题:An important advice
雅思口语素材:好句推荐-面朝阳光
雅思口语素材:好句推荐-管理时间
雅思口语素材:《飞鸟集》经典语录3
雅思口语素材:好句推荐-自己的人生
雅思口语高频话题:Sth You Would Like to Learn
26首有助提高雅思口语成绩的歌曲
雅思口语高频话题:A Performance
雅思口语素材:好句推荐-比昨天更好
雅思口语天天练:实用俚语
雅思口语素材:名人名言-萨尔玛·海耶克
雅思口语天天练:not one's place
雅思口语素材:《飞鸟集》经典语录1
雅思口语素材:《飞鸟集》经典语录
雅思口语范文:衣服时尚
雅思口语妙句:换一种说法拿高分
雅思口语素材:历届奥运会口号
雅思口语范文:结婚人选的人格特点
雅思口语素材:《当幸福来敲门》经典台词
雅思口语范文:环境污染
雅思口语素材:好句推荐-孕育成功
雅思口语范文:描述动物的卡片
雅思口语高频话题:Invention
雅思口语素材:人生就像"愤怒的小鸟"
雅思口语高频话题:Traditional Event
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