时刻准备

• 日(sun; day)RADICAL
• 寸(inch; unit of measurement)PHONETIC

Time flows like the sun moving inch by inch across the sky.

• 亥(twelfth earthly branch (pig))PHONETIC
• 刂(blade; knife edge)RADICAL

Using a knife to carve into a surface creates a deep mark.

• 冫(ice; cold)RADICAL
• 隹(short-tailed bird)PHONETIC

Cold ice water helps measure water level accurately, thus meaning standard, permissible.