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As the neighbours complained of the noise, my husband spent weeks training him to press his paw on the latch to let himself in.
由于邻居们对狗叫很有意见, 所以我丈夫花了几个星期的时间训练它用脚爪按住门闩把自己放进来.
sb. spend time (in) doing sth./on sth.花费某段时间去做某事（人作主语）
你为什么不在学习上再多花点时间呢？
Why don’t you spend more time on studies?
我花了两个星期的时间读这本书。
I spent two weeks (in) reading this book.
let sb. do sth.让某人做某事
let sb. in让某人进来；
let sb. out让某人出去
let sb. down让某人失望
complain
~ (to sb) (about / of sth) to say that you are annoyed, unhappy or not satisfied about sb/sth
`I do everything you ask of me,' he complained.
她向我诉苦说他粗鲁.
She complained to me about his rudeness.
Rex soon became an expert at opening the gate.
雷克斯很快成了开门的专家.
expert
An expert is a person who is very skilled at doing something or who knows a lot about a particular subject
n. 专家
expert at/in/on sth.在某一方面是专家
约翰是开车高手。
John is an expert at driving a car.
她是花卉方面的专家。
She is an expert in flowers.
山姆是研究那个问题的权威。
Sam is an expert on that problem.
