heads-up

Adjective

With head directly above the neck, eyes front. / Alert; vigilant

Japanese Meaning

頭が首の上にあり、目が前を向いている状態（まっすぐな立ち姿や姿勢を示す） / 警戒している、用心深い様子

Before marching, the sergeant told the recruits to adopt a heads-up stance.

行進の前に軍曹は新兵たちに頭を首の真上にまっすぐ保ち、目線を前に向ける姿勢をとるように命じた。

Sense（1）

With head directly above the neck, eyes front.

A heads-up posture meant the pilot couldn't pay attention to his instruments.

Sense（2）

Alert; vigilant

Getting those marbles off the red carpet was a real heads-up move.

more heads-up

（ comparative ）

most heads-up

（ superlative ）