减少UILabel之间的间距（垂直位置不明确）

Question

我下面有两个UILabels，它们具有以下约束

self.topText.topAnchor.constraint(equalTo: self.topAnchor, constant: 15),
        self.topText.leadingAnchor.constraint(equalTo: self.leadingAnchor, constant: 16),
            self.topText.trailingAnchor.constraint(equalTo: self.trailingAnchor, constant: -screenWidth/2),

self.bottomText.topAnchor.constraint(greaterThanOrEqualTo: self.TopText.bottomAnchor, constant: 5),
            self.bottomText.leadingAnchor.constraint(equalTo: self.TopText.leadingAnchor),
            self.bottomText.trailingAnchor.constraint(equalTo: self.topText.trailingAnchor),

并且屏幕截图如下所示，我无法缩小它们之间的间距。任何帮助将不胜感激。