| 单词 | periscopes |
| 释义 | periscope /perˈi-skōp/nounA device (eg a tube with mirrors) by which an observer can look at something which is not in the direct line of sight (eg out of a submarine or over the heads of a crowd) ORIGIN: Gr periskopeein to look around periscopic /-skopˈik/ adjective |
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