Yèlǐ hángbiāodēng zhǐyǐn zhe chuánzhī tōngguò xiázhǎi de shuǐdào.
At night, navigation lights guide ships through the narrow channel.
Tips
usage
Frequently used metaphorically - "a 航标灯 in someone's life" means a guiding light or moral compass. Literal use is largely confined to maritime and river-shipping contexts.
