/ˈhɑ:mləs ||; ˈhɑrmləs/adj1 not able or not likely to cause damage or injury; safe 无害的；安全的: You needn't be frightened -- these insects are completely harmless. 你不用怕─这些昆虫根本不会伤人。
2 not likely to upset people 不会令人难堪的:
The children can watch that film -- it's quite harmless. 那部电影没有什么不好的地方，让孩子看看也无妨。 ➔harmlessly adv