The act landed and you want it to hold — caught, lodged, stopped for good.
序 · The move
1Pick the action verb: 記 (remember), 抓 (grab), 站 (stand), 停 (halt).Is there an outcome that, once reached, should stay put?
2Tail 住 on to mark the result held fast: 記住、抓住、站住。Did the thing get fixed in place, not merely touched once and released?
3Name what is now held.Is it secured so it cannot slip back out, rather than still loose?
例 · Examples
1姐姐學一遍go through it once，就記住memorized and held it fast所有作法way of doing it; method了。
My older sister watched it once and had every step locked in.
界 · Boundary
V到
到 frames the act as reaching its target (記到 is wrong; 看到 = the look arrives). 住 frames the result as gripped and staying: 記住 = lodged and not slipping.
結果補語 is the open verb+result rule; V住 is its locked instance where the result is staying-put: it holds, it does not let go.
我記了生詞，可是忘了 → 我記住了生詞 (took down vs. held it fast in memory)
他抓我的手 → 他抓住我的手 (grabbed at vs. got a grip that holds)
公車到站，他站了 → 公車到站，他站住了 (stood vs. stopped dead and held the spot)
English remember/catch/stop already bundle the holding, so learners drop 住 and use the bare verb: "我記了 the word" for "I've got the word down." Bare 記 only claims the act of noting, not that it stuck.