を補う

make up for; supplement

→ を
phrase Rare #35,549
make up for; supplement Used when something compensates for a deficiency, weakness, loss, or shortfall. The noun before を is what is being made up for or supplemented.
JA: 農民はしばしば収入を補うために副業をします。
EN: Farmers often do side jobs to supplement their income.

彼女が損失を補うように我々は提案した

We suggested that she make up for the loss.

美徳欠点を補うんだよ

Virtue makes up for shortcomings.

— マルコムX (1992)

農民はしばしば収入を補うために副業をします

Farmers often take on side jobs to supplement their income.

彼女が損失を補うようわれわれは要求した

We demanded that she make up for the loss.

人の美徳弱点を補うのさ

A person's virtues make up for their weaknesses.

— マルコムX (1992)