They have the usual quota of human weaknesses, no doubt.毫无疑问，他们身上也有人所共有的弱点。There was no doubt in his mind that the man was serious.在他看来，这个人无疑是认真的。I have no doubt that we are polluting the environment beyond redemption.我丝...

很可能，无疑地，固然...

no doubt的音标：...