small wonder

Noun

idiomatic uncountable

(idiomatic) An event or fact whose cause or rationale is not difficult to discern; an unsurprising occurrence.

Japanese Meaning

当然の結果、予想通りの出来事 / 不思議に思えない、納得のできる事態 / 論理的に説明できる、ありふれた現象

試験のために夜遅くまで勉強していたのだから、講義中に居眠りしたのは驚くべきことではない。

Sense（1）

(idiomatic) An event or fact whose cause or rationale is not difficult to discern; an unsurprising occurrence.

Small wonder if he had loved her for herself, she was so beautiful.