1. The nadir of fertility appears to be 1. 3 children per woman. 最低的生育率甚至到了每位妇女1。3个孩子。
2. The demand for this product will reach its nadir within two years. 对此产品的需求在两年内将达到最低点。
3. Trouble is, no one ever knows until much later when the market has reached its nadir. 问题是，直至股市已跌至谷底很久之后人们才意识到它的发生。
英英解释
n.
1. an extreme state of adversity; the lowest point of anything
2. the point below the observer that is directly opposite the zenith on the imaginary sphere against wh
