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效率 ประสิทธิภาพ
Stroke order
效率 is written in 21 strokes across 2 characters.

- 效 — 10 strokes
- 率 — 11 strokes
Related words
效率 is pronounced xiàolǜ and means “ประสิทธิภาพ”. HSK 5 is where this word sits in the Hanyu Shuiping Kaoshi, the exam used to grade Chinese proficiency. Reading 效率 and remembering it are not the same achievement: the first fades within days unless the second is practised. LexiTrail times each review to the edge of forgetting, which is where a repetition is worth the most.