at a glance 一瞥；看一眼at a gallop 飞快地；用最快速度at a full gallop [航空、航天科学技术]飞跑着at a distance 在远处；有相当距离at a discount 打折扣；不受欢迎，没销路at a disadvantage 处于不利地位at a concessionary price [经济学]按照特惠价格at a clip 一次at Christmas 在圣诞节；圣诞节时；在圣诞节期间at (the) worst at (the) sight of at (the) root at (the) most at (the) longest at (the) least at (the) latest at (the) furthest at (the) first glance at (the) first blush at (the) first