scr screw 螺絲釘 [Card #17; 字卡第17張: 第1個單字, 字母組合發音 scr]

scr = /skr/
Some more examples（更多例字）：scram, scramble, scratch, scrapbook, scrap, scrape, scrawl, scrawny, screak, scream, screen, sunscreen, screech, scrimp, script, manuscript, scrimmage, scribble, scrabble, scribe, scroll, scrub, scrunch, scrutinize, scrutiny, scruple, scrupulous, screwdriver, transcribe, describe, description, prescribe, prescription, subscribe, subscription, subscript, superscript