### Chinese: 与此同时，以 U 型潜艇为主力的德国海军试图拦截这场运输。
### English: Meanwhile, the German Navy, dominated by U-boats, attempted to intercept the shipment.
### Errors: There is a critical change of gender pronoun error in the English translation.

### Improved English: Meanwhile, the German Navy, dominated by U-boats, attempted to intercept the shipment.
