二に眼がん

noun which may take the genitive case particle 'no'

twin-lens

Used almost exclusively in the compound 二眼レフ (twin-lens reflex camera). The standalone form is rare.

See also: 二眼レフ (にがんレフ)

• 二に眼がんレフカメラは、二ふたつのレンズが縦たてに並ならんでいる。

  A twin-lens reflex camera has two lenses arranged vertically.

noun

two eyes (in go)

In the game of go, a group with two eyes is unconditionally alive. This is a technical term.

See also: 眼 (がん)

• 二に眼がんを作つくれば、その石いしは取とられない。

  If you make two eyes, those stones cannot be captured.