Peptonephridia
消化肾管
🗣️ 情景例句
How many courses are you taking this semester?
这学期你选了多少课？
Everything has its time and that time must be watched.
任何事情都有好的时机，不要随意放过。
Professor Karl von Frisch, an Austrian scientist, spent many years of his life researching the amazing ways honey bees communicate in their dark hives.
卡尔·冯·弗里施教授，一位澳大利亚科学家，一生中花了许多年的时间来研究蜜蜂在暗巢里互传信息的有趣方法。