化学需氧量

• 亻(person; human)RADICAL
• 匕(spoon; compare)PHONETIC

A person standing upright beside a person bending down shows how shapes transform and change.

• ⺍(two hands (indicating learning))ASSOCIATIVE
• 冖(roof; house)ASSOCIATIVE
• 子(child)RADICAL

A child sitting under a roof with two hands diligently studying represents learning.

• 雨(rain)RADICAL
• 而(but; yet; also)PHONETIC

When plants and grass need rain, they urgently beseech the sky to pour water down.

• 气(air; vapor)RADICAL
• 羊(goat)PHONETIC

Gas with a tone like 'dương' is oxygen—the gas that sustains all living things.

• 旦(dawn; daybreak)PHONETIC
• 里(village; mile (unit of measurement))RADICAL

Measure each mile of the road right from dawn's first light.