tumbleweed
noun /ˈtʌmblwiːd/
/ˈtʌmblwiːd/
[uncountable]- a plant that grows like a bush in the desert areas of North America and Australia. In the autumn, it breaks off just above the ground and is blown around like a ball by the wind.
风滚草（生长于北美和澳洲沙漠地区，秋季在地面处折落，随风像球一样到处滚动）