Translation of "cannot but" into Chinese

From this perspective, we cannot but acknowledge that the progress made has been insufficient.

从这个观点来看,我们不得不承认至今取得的进展仍然不够。

They raise tensions and cannot but cast doubt on the motives of those involved

这些造成了紧张气氛,不能不令人怀疑所涉人员的动机。