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词汇 joist
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joist n.

"timbers supporting a floor, etc.," early 14c. gist, giste, from Old French giste "beam supporting a bridge" (Modern French gîte), noun use of fem. past participle of gesir "to lie," from Latin iacēre "to lie, rest," related (via the notion of "to be thrown") to iacere "to throw" (from PIE root *ye- "to throw, impel"). The notion is of a wooden beam on which boards "lie down." The modern English vowel is a corruption.

updated on May 11, 2017

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更新时间:2025/5/1 20:34:00