There was a definite boundary line that could not be crossed, an inner family circle which excluded me.

我们之间总有一条无法逾越的界线，他们那个家庭小圈子总是把我排斥在外。

youdao

As the sun passed overhead, he marked even divisions on the circle as the shadow of the stick crossed it.

当太阳在天上走过时，棍子的影子与圆圈相交，他便在圆圈上划出许多分割圆圈的记号。

youdao

His boat crossed the Antarctic Circle in three places, but he still failed to sight land.

VOA: special.2009.06.03