短語chasing your tail的意思就是從早到晚忙個不停，但沒有太多收獲，就是我們常說的瞎忙活或無謂瞎忙。
　　例句：
　　I've been chasing my tail all day, but I haven't got anything done! What a waste of a day!
　　Organising a meeting for next week has been impossible. I've been chasing my tail trying to sort out a date, venue and agenda... I'll try again tomorrow!
　　類似表達(dá)：
　　短語to run around like a headless chicken的意思是投入大量精力去做很多事情，但是沒有任何真正的收益，如漢語里常說的“像無頭蒼蠅到處亂撞”。
　　例句：
　　I've been running around like a headless chicken all day trying to get ready for my holiday, but it's already 7.30pm and I've still got loads to do!
　　A southern right whale's head measures one third of its total length. It is easy to identify, as the enormous head is covered in white-coloured outgrowths of tough skin. They are only found in the oceans of the southern hemisphere.
　　一條南露脊鯨的頭部長為其整個身體的三分之一。這類鯨魚非常容易識別，因?yàn)榫薮蟮念^部被一堆白色的硬糙皮覆蓋。人們只能在南半球的海洋里看到南露脊鯨。

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