His enemy was close behind him, and the bridge over the ravine was rotten and swaying. Caught between the devil and the deep blue sea, he hesitated.
病人情况危急,因而需要手术,但又无法保证她是否能经受得住麻醉剂,外科医生处于进退两难的境地。
The patient's condition was critical and she needed an operation but there was no guarantee that she would survive the anaesthetic; the surgeon was on the horns of a dilemma.