quy củ has 2 syllables: quy: ngang (level) · củ: hỏi (dipping-rising). You can also listen to it on this page in both Northern and Southern accents.
How common is quy củ in Vietnamese?
quy củ is among the 8,000 most-used Vietnamese words, CEFR level C2.
How is quy củ used in a sentence?
For example: Gia đình này rất có quy củ. (This family has a lot of discipline.); Chúng ta phải giữ quy củ trong lớp. (We must maintain discipline in class.).
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