Correct: scrub, scribble, screw, scroll, screen, scrape, scraps, scratch, scream, stroke, strong, stroll, stray, straw, strike, strawberry, struck, strum, stretch, Incorrect: sock, sack, silly, super, sink, stink, sub, sing,

Trigraphs /scr/ and /str/

由
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恢复自动保存：？