他在一棵树下面停了下来，以便判明自己的方位。 He pauses a moment at the foot of a tree to take his bearings.
翼剖面；机翼；翼面一个部件或平面，如机翼、螺旋桨叶、方向舵等，其形状或方位控制稳定性、方向、抬升、冲击或驱动 A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.
登山的人在浓雾中难以确定自己的方位。 The mountaineers found it difficult to orientate themselves in the fog.
