at strain

• 努力地

at strain的用法和样例：

例句

1. He is working hard at this thesis.
   他正在努力地撰写论文。
2. I study my English lesson very hard at school.
   在学校我很努力地学习我的英语课。

词汇搭配

• strain at a gnat 谨小慎微
• strain at 用力
• strain at the leash 牵扯皮带
• strain at something 使劲拉某物
• strain at a gnat and swallow a camel 拘于小事大事糊涂...