看这一段.说的很清楚,并非山穷水尽. 还有回旋余地.

The preemptive destruction of bridges is likely an indicator that Ukrainian troops may seek to inhibit Russian movement in eastern Bakhmut and limit potential westward Russian egress routes out of Bakhmut. Ukrainian Presidential Advisor Oleksandr Rodnyanskyi previously stated on February 28 that Ukrainian forces could choose to pull back from positions in Bakhmut as needed. Rodnyanskyi also noted that Ukraine has fortified the area west of Bakhmut such that even if Ukrainian troops begin to withdraw, Russian forces would not necessarily be able to rapidly take the entire city.[3] If the Ukrainian military command deems it necessary to withdraw from Bakhmut it will likely conduct a limited and controlled withdrawal from particularly difficult sectors of eastern Bakhmut judging from Ukrainian statements and reported Ukrainian actions.