在这种情况下 in that case / under the circumstances / in such a case
In that case we will not look on with folded arms.
在这种情况下,我们不会袖手旁观.
Under the circumstances,I couldn't go away.
在这种情况下,我不能离开
In such a case,he should call the physician.
在这种情况下,他应该请医生