For the best crab viewing, Australian officials advise tourists (pictured, a Christmas Island visitor in an undated photo) to arrive during the last quarter of the moon in either November or December.

每年十一月或十二月的下弦月是最佳的观蟹时机，澳大利亚官方建议游客们选择这个时间前来圣诞岛观光。

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In the morning and late afternoon around the last quarter of the moon, the egg-laden females descend from the terraces to the shoreline.

早晨和午后，通常是下弦月时，雌性从岩石边下来，来到海岸线。

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Now that the moon is past last quarter and therefore gone from the evening sky, look for one of summer's most beautiful celestial sights.

现在，月亮已脱离下弦月的形态，在傍晚的夜色中渐渐隐去。为了找寻这个夏夜最美景观的一份子。

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