Tool whose blade loosens , weeds and aerates the soil ; it is also used to groom the soil around a plant .

用工具加工刀片松开，除草并且供气土壤;它也被用于在植物附近修饰土壤。

Fortunately , christmas island crabs aren 't just a nuisance . Their feces acts as a crucial forest fertilizer , and their burrowing turns and aerates the soil , according to the christmas island national park website .

幸运的是，圣诞岛红蟹带来的也不全是麻烦，据圣诞岛国家公园网站介绍，它们的排泄物是重要的雨林肥料，它们挖的洞还会松动土壤。