| 释义 |
| | | | NOUN | | | | | /ˈkɑːsl/ | | | | | 1 | a large strong building with thick walls, built in the past to protect the people inside from being attacked （旧时的）城堡，堡垒 | | | | 2 | one of the pieces used in the game of chess （国际象棋中的）车 | | PHRASE | | - | build castles in the air
| | to have hopes and dreams that are unlikely to become real | | 建空中楼阁；做白日梦；抱有不切实际的愿望 | | | | | | |