空中掩护: air cover的: 4次方是 The fourth power of 2 i ...飞机: airplane; plane; aeroplane; ...空中掩护: air cover; air umbrella全天候空中掩护: all-weather sky cover对行进纵队的空中掩护: column cover航空母舰的空中掩护: carrier air cover空中的飞机: airborne aircraft掩护的: covering无掩护的港: open harbor; open harbour跟踪空中目标的飞机: trailer aircraft空中被击中起火的飞机: flamer被掩护的水域: sheltered water无掩护的侧翼: unprotected flank; unscreened flank无掩护的前进: uncovered advance无掩护的行军: uncovered march无掩护的运动: uncovered movement掩护的战斗机: umbrella fighter有掩护的泊池: sheltered water basin有掩护的港口: protected harbor有掩护的水域: sheltered area of water空中的飞鸟: birds flying overhead进行掩护的后卫: covering back无掩护的接敌运动: uncovered movement to contact无掩护的运输队: unprotected column; unprotected convoy