To grow less; diminish; dwindle.

减少；缩减；逐渐缩小。

Abate.

减轻。

To cause to grow less.

使减少。

Gradual lessening or decay.

渐减；渐衰。

The amount or degree of lessening.

减少量；消减度。

To decrease is to become less, esp. by an inner or natural process, or to make gradually less.

Decrease 指减少，尤指因内在或自然力促使减少或逐渐消减之意：

Diminish and lessen mean to become less in size, number, or quantity.

Diminish 与lessen 指体积、数量或分量的变少变小：

Both these words also have the meaning to make less.

此两字均有使之减少之意：

To dwindle is to shrink or waste away, or to disappear gradually.

Dwindle 有缩小、耗减或逐渐消失之意：