根据《柯林斯英汉双解大词典 》：
ADJ If you say that someone is reckless, you mean that they act in a way which shows that they do not care about danger or the effect their behaviour will have on other people. 鲁莽的; 不顾后果的
recklessly ADV 鲁莽地; 不计后果地[1]
reckless driving 鲁莽驾驶；驾驶疏忽[1]
Many people believe reckless drivers are treated too leniently.
很多人认为对鲁莽的司机处理得太宽大了。
He'd arranged for his client to pay a stiff fine for charges of DWI and reckless driving.
他安排客户为他酒后驾车和鲁莽行驶交付高额罚款。
He approached life with reckless abandon–I don't think he himself knew what he was going to do next.
他以不计后果的放纵态度对待生活–我想他自己都不知道他接下来要做什么。[1]