The larvae may be excreted in the faeces.幼虫会连同粪便排出.The faeces contain nitrogen and it is that which fertilises the desert soil.粪便含氮，而正是氮可以肥化荒芜的土地。They stand on their own accumulated faeces, which quickly become disease -...
他跟顾客打招呼时直呼其名，并问他们身体可好。He greets customers by name and enquires about their health.他向他们挥一下手，热情地笑着向他们打招呼。He greeted them with a wave and a broad smile.他们俩都笑着跟朋友们点头打招呼。Both of them smiled and nodded at friends....