in a way that is unable or unlikely to cause damage or harm 无害的；不会导致损伤的 The missile fell harmlessly into the sea. 导弹落到了海里，没有造成任何伤害。 🔊🔊 His interest in guns started harmlessly enough, but later it became an obsession. 他对枪支的兴趣起初是无害的，但后来变成了痴迷。
in a way that is unlikely to upset or offend anyone 不会引起不快的；无恶意的 She was flirting harmlessly with some boys who were passing by. 她正和路过的一些男孩调情无害。