When he had turned the Angle of the gallery, the distant glimmer of an air-hole disappeared, the curtain of obscurity fell upon him once more, and he became blind again.

当他转过了巷角以后，远处通气洞的光线就消失了，黑幕又在他前面落下，使他再次失明。

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The Zinc phosphide sticks were inserted into new hole of the gallery from bottom to top, and then the holes had to be blocked with mud.

利用磷化锌毒签防治幼虫时要在蛀道低端几个新鲜都插毒签，并用泥土密封所有排粪孔。

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