Monday，2026.03.23

New words：

mariner [ˈmærɪnə(r)] n.水手；海员
submarine [ˈsʌbməˌrin] n.潜艇 adj.海底的

必记高频搭配

the mariner's compass 航海罗盘

The compass is very important for a mariner.

a nuclear submarine 核潜艇

A nuclear submarine can stay under water for a long time.

submarine volcano 海底火山

There are many submarine volcanoes in the ocean

compass[ˈkʌmpəs] n.罗盘；指南针；圆规；