Whether the government seizes the moment is altogether more doubtful .

英国政府是否会抓住这个时机则非常值得怀疑。

Perhaps , but it is doubtful he would have succeeded .

或许是这样，但他是否会成功却很成疑。

Fourth , expect foreign affairs departments to stay in sight of doubtful regimes .

第四，命令外交部密切注意可疑的政权。

Police said he died after playing hide-and-seek with inmates , but this conclusion seemed doubtful .

警察说，他在与室友玩捉迷藏后死亡，但是这个结论似乎是令人生疑的。

The fish is also safe , although consumers are doubtful .

尽管消费者有怀疑，但是鱼也是安全的。