投手圈的英文：
pitcher''s circle

Whether the pitcher strikes the stone, or the stone the pitcher, it is bad for the pitcher.
不论是水罐敲石头，还是石头敲水罐，都是水罐遭殃。

Walls (or Pitchers) have ears
隔墙有耳

Finally, he found a pitcher.
终于，他找到了一个大水罐。

This season is undoubtedly the best for this pitcher.
这个球季毋庸置疑是这个投手表现最好的一个球季。

The pitcher delivered a curve ball.
投手投掷了一个弧线球。

circle of longitude
经度圈;经度圈;黄经圈;黄纬圈

circle of declinatio
赤纬度盘;赤纬圈;时圈

This is a chord of a circle.
这是个圆的弦。

circle absorber
环形吸收器

This is a virtuous circle.
这是一种良性循环。