Translation

• height
• level
• (music) pitch
• relative superiority
• propriety
• discretion (usu. in the negative, e.g. 不知高低[bu4zhi1 gao1di1])
• no matter what
• just
• simply (will not ..., must ... etc)
• at long last

Synonyms

• 三六九等, 上下, 优劣, 天壤, 好坏
• 分寸, 大大小小, 大小, 尺寸, 深浅, 轻重, 轻重缓急
• 长, 长短, 高, 高度, 高矮
• 响度, 轻重, 音量

Examples

• 人生充满了高低起伏。
  Life is full of ups and downs.
• 生活中有高低起伏。
  In life there are ups and downs.