细胞周期

• 糹(thread; fiber)RADICAL
• 田(field; paddy field)PHONETIC

A thin thread like a furrow in a field is small and delicate.

• 冂(surround; border)RADICAL
• 土(earth; soil; ground)ASSOCIATIVE
• 口(mouth; door)ASSOCIATIVE

A territory surrounded by boundaries like earth and gates enclosed all around.

• 其(that; that one)PHONETIC
• 月(moon; month)RADICAL

Watch the moon's phases wax and wane to count periods of time.