"stone in the middle of an arch, which holds up the others," 1630s, from key (n.1) in figurative sense of "that which holds together other parts" + stone. Figurative sense is from 1640s. Pennsylvania was called the Keystone State because of its position (geographical and political) in the original American confederation, between northern states and southern ones. Keystone cops were the bumbling police in the slapstick silent movies produced by Keystone Company, formed by Canadian-born U.S. film director Mack Sennett (1884-1960) in 1912.
雙語例句
1. Keeping inflation low is the keystone of their economic policy.
將通貨膨脹率保持在較低水平是他們經(jīng)濟(jì)政策的主旨。
來自柯林斯例句
2. Social justice is the keystone of their political program.
社會公平是他們政治綱領(lǐng)的基本原則.
來自辭典例句
3. Quantitative measurements of one sort or another serve as the keystone of engineering practice.
定量測定一種或多種成分是環(huán)境工程中的重要項(xiàng)目.
來自辭典例句
4. The keystone to any marriage is one word: " WE ".
任何婚姻的基石只有兩個字: “ 我們 ”.
來自互聯(lián)網(wǎng)
5. Advancing suburban assurance is the difficulty and keystone of domestic insurance enterprise.