dubious
adj
1 [esp pred 尤作表语]
~ (about sth/doing sth) not certain and slightly suspicious about sth; doubtful 半信半疑; 可疑
I remain dubious about her motives. 我对她的动机仍存疑念.
2 (derog 贬) possibly or probably dishonest, disreputable or risky 不大可靠的; 名声不大好的; 冒风险的
a rather dubious character 名声不太好的人
a dubious business venture 冒险的商业投机
His background is a trifle dubious, to say the least. 起码可以说, 他的背景不大可靠.
3 uncertain in result; in doubt 结果未定的; 不能确定的
The results of this policy will remain dubious for some time. 这项政策的效果短期内难以确定.
4 (esp ironic 尤作反语) of which the value is doubtful; questionable 价值可疑的; 有问题的; 有争议的
a dubious compliment, ie a disguised insult 明褒实贬的恭维
She had the dubious honour of being the last woman to be hanged in England. 她是英国最後一个受绞刑的女子, 这也算是有此殊荣吧. > dubiously adv. dubiousness n [U].
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%,它就要燃烧。
I think it is important to understand the relations between parents and their children. They spend time, energy and money in bringing up children and providing them with what they need. Then, as with young birds, the time comes for the young to leave. As