循环

1. 我得有经验才能找到工作，可是没有工作我就无法获得经验--这真是个恶性循环。
   I need experience to get a job but without a job I can't get experience it's a vicious circle.
2. 哈唯发现了血液循环。
   Harvey discovered the circulation of the blood.
3. 循环小数｀3.999 ... ＇亦作｀3.9循环＇。
   The recurring decimal 3.999 ... is also described as 3.9 recurring.
4. 四季循环交替。
   The seasons follow each other in rotation.
5. 血液在体内循环。
   Blood circulates through the body.

环的英语翻译：