ký hiệu has 2 syllables: ký: sắc (high rising) · hiệu: nặng (low, short, glottalized). You can also listen to it on this page in both Northern and Southern accents.
How common is ký hiệu in Vietnamese?
ký hiệu is among the 5,000 most-used Vietnamese words, CEFR level B2.
How is ký hiệu used in a sentence?
For example: Ký hiệu này có nghĩa gì? (What does this symbol mean?); Trên bản đồ có nhiều ký hiệu khác nhau. (There are many different symbols on the map.).
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