strain at的用法和樣例：
例句
- She's under a lot of strain at the moment; her child's very ill.
她現在心情緊張，因為她的小孩病得很厲害。 - The dog is so powerful that every time it strains at its lead it nearly pulls me off my feet.
那只狗力氣很大，每次它用力拉脖子上的皮帶時(shí)，我幾乎給拉得站不住腳。
詞匯搭配
- at strain 努力地
- strain at a gnat 謹小慎微
- strain at the leash 牽扯皮帶
- strain at something 使勁拉某物
- strain at a gnat and swallow a camel 拘于小事大事糊涂...
