| 单词 | extension ladder |
| 释义 | extension laddernouna ladder having two or more sections joined by a sliding mechanism that allows the ladder to be extended to the total length. Origin of extension ladderFirst recorded in 1870–75 Words nearby extension ladderextensionality, extension bolt, extension cord, extension courses, extension field, extension ladder, extension library service, extension ring, extension rule, extension tube, extensity Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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