柯林斯词典bacillus /bəˈsɪləs/ (bacilli) 1. N-COUNT A bacillus is any bacterium that has a long, thin shape. 杆菌 返回 bacillus剑桥词典a bacterium (= an extremely small organism ) that is shaped like a rod . There are various types of bacillus, some of which can cause disease . 杆菌 返回 bacillus