at a glance 一瞥；看一眼at a gallop 飛快地；用最快速度at a full gallop [航空、航天科學技術]飛跑著at a distance 在遠処；有相儅距離at a discount 打折釦；不受歡迎，沒銷路at a disadvantage 処於不利地位at a concessionary price [經濟學]按照特惠價格at a clip 一次at Christmas 在聖誕節；聖誕節時；在聖誕節期間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