to be careful about ~

Kyūjitai form of 立方半八面体: cubohemioctahedron

cubohemioctahedron

affectation

実感: actual feeling / 十干: the ten heavenly stems

実感: to perceive, to actually feel

数: number:(numeric) figure / 下図:

The そくおん (sokuon): a small form of つ (tsu). In romanization, this is represented by doubling the following consonant. The equivalent in katakana is ッ. / A glottal stop or “choked sound”.

(colloquial) very, super. Inserted after the first syllable of an adjective, an adverb, or an ABAB-type onomatopoeia.

打楽器: percussion instrument