straight ladder（直梯）是什么意思？音标发音+图解场景

直梯 /ˈstɔːɹɪdʒ ˈtɹeɪ/ n

English: straight ladder · 直梯

释义：Ladder that leans against a wall, comprised of two parallel side rails joined by rungs.

这个词出现在以下图解场景（1）