late 14c., "action of making a contract" (especially of marriage), also "action of shrinking or shortening," from Old French contraction (13c.), or directly from Latin contractionem (nominative contractio), noun of action from past participle stem of contrahere (see contract (n.)). Meaning "action of acquiring (a disease) is from c. 1600. Grammatical sense is from 1706; meaning "a contracted word or words" is from 1755. Contractions of the uterus in labor of childbirth attested from 1962.
雙語例句
1. The contraction of muscles uses energy and releases heat.
肌肉的收縮消耗能量并且釋放熱量。
來自柯林斯例句
2. the expansion and contraction of the metal
金屬的膨脹與收縮
來自《權(quán)威詞典》
3. Contraction of the timbers left gaps in the fence.
木料收縮,結(jié)果圍墻露出縫來.
來自《簡明英漢詞典》
4. The forces of expansion are balanced by forces of contraction.
擴(kuò)張力和收縮力相互平衡.
來自《簡明英漢詞典》
5. "It's" (with an apostrophe) should be used only as a contraction for "it is".