adj.不可靠的,靠不住的;不能信任的;
例句:
The car's becoming very unreliable.
这辆汽车的性能变得非常不稳定。
As a result, rape statistics have a reputation of being unreliable, and international comparisons are problematical.
其结果是, 强奸案统计数据被人认为是不可靠的, 而且国际间的数据比较也有疑问.
He's totally unreliable as a source of information.
他提供的消息完全不可信。