Her wing and tail design allow her to fly in any direction.凭翅膀和尾巴的设计，它能飞向四面八方

allow主要用作及物动词,可用于被动结构,作“允许进入”解时其后可直接接表示方向的副词或介词,作“允许做某事”解时其后可直接接宾语,也可接双宾语,其间接宾语可转化为介词to的宾语,还可接以动词不定式(短语)作补足语的复合宾语。

The road is too narrow to allow the passage of gondola.

这条街太窄，大型货车不能通过。

My boss doesn't allow me to use the telephone.

老板不许我使用电话。

he's weighed down with two super-long tail feathers,tipped with cumbersome discs.它被两根超长的尾羽拖累，尾羽末梢是笨重的圆盘

weigh down使 ... 负重担； 使疲惫不堪； 使沉重

A ball of lead will weigh down an equal bulk of feathers.

一个铅球要比同样大小的羽毛团重。

Jane weighed down her repertory with these plays.

简加上这几出戏，使她的演出剧目得到了加强。

tip with 以 ... 为尖端

That thin red line tipped with steel.

那根细细的红线末端装有钢头。

but to win her heart he's got to go up a gear.但要赢得雌鸟的心，它非加把劲不可

go up上升，提高

A ragged shout went up from the small crowd.

这一小群人发出了刺耳的喊叫。