unconvincing

1.gave an unconvincing excuse.

给出一牵强借口

2.a slightly bizarre and unconvincing fusion of musical forces.

略微奇特而并不不同音乐融合。

3.she managed a brave but unconvincing smile.

她勉强笑了笑，很是勇敢，但让难以相信是真心想笑。

4.she felt the lie was unconvincing, but he seemed to take it at face value .

她觉得这谎言不信，但他似乎是怎么怎么信。