Your position distance 400metres from intersection of reference line.
你船的位置距参照线交点400米。
Draw the projection of the intersection line.
在相交处应画出交线的投影。
Life is a line segment, the intersection after the separation.
人生就是线段，交集后分离。
Life is a line segment, the intersection after the separation.
人生就是线段，交集后分离。
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