Taivo A Taiwan Mandarin dictionary

九十

jiǔshí

ㄐㄧㄡˇ ㄕˊ

  1. 1ninety
Example

直角是九十度。

zhíjiǎo shì jiǔshí dù

A right angle has ninety degrees.

Keep 九十 and it comes back until you know it.

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