せんいき【戦域】 a theater of war.‖戦域核兵器 theater nuclear weapons.

せんいちや【千一夜物語】 The Thousand and One Nights;the Arabian Nights' Entertainments.

せんいつ【専一に】 exclusively;→英和 devotedly.勤めを〜にする devote oneself to one's business.御自愛〜に Please be careful of your health.

せんいん【船員】 a crew (総称);→英和 a seaman.→英和 高級(下級)船員 an officer (a sailor).→英和

ぜんいん【全員】 all (the) members;the whole crew (船など).〜一致で unanimously.→英和

せんうん【戦雲】 war clouds.