阿秒 ā miǎo ㄚ ㄇㄧㄠˇ aa3 miu5

  • (physics) attosecond (10⁻¹⁸ s)

Stroke order

Practice writing

Draw 阿 (1 of 2) — stroke by stroke.

Draw each stroke of the character in order using your mouse or finger. A hint appears after three misses.