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1·For once, Dad is not complaining.

就这一次，爸爸没有抱怨。《柯林斯英汉双解大词典》

2·My first attempts at complaining were kind of tentative.

我头几次的投诉尝试都有点儿犹豫。《柯林斯英汉双解大词典》

3·Hillsden was complaining of a cramp in his calf muscles.

希尔斯登一直在抱怨他小腿肌肉抽筋。《柯林斯英汉双解大词典》

4·At a nearby table a man was complaining in a loud voice.

附近的一张餐桌旁一个男子在高声抱怨着。《柯林斯英汉双解大词典》

5·There's no point complaining now—we're leaving tomorrow in any case.

现在抱怨毫无意义，不管怎样我们明天都要离开。《牛津词典》

6·Doctors are complaining about being barraged by drug-company salesmen.

医生们抱怨总是受到医药公司销售人员的骚扰。《柯林斯英汉双解大词典》

7·Some of the victims are complaining loudly about the uneven distribution of emergency aid.

一些受害者正大声地抱怨紧急援助的不均衡分配。《柯林斯英汉双解大词典》

8·What are teachers complaining about?

老师们在抱怨什么？

9·My boys are always complaining that they're bored.

我的孩子们总是抱怨，说他们很无聊。

10·Complaining in person or by letter is generally more effective.

当面投诉或写信投诉通常更有效。

抱怨

1·For once, Dad is not complaining.

就这一次，爸爸没有抱怨。《柯林斯英汉双解大词典》

2·At a nearby table a man was complaining in a loud voice.

附近的一张餐桌旁一个男子在高声抱怨着。《柯林斯英汉双解大词典》

3·Hillsden was complaining of a cramp in his calf muscles.

希尔斯登一直在抱怨他小腿肌肉抽筋。《柯林斯英汉双解大词典》

4·There's no point complaining now—we're leaving tomorrow in any case.

现在抱怨毫无意义，不管怎样我们明天都要离开。《牛津词典》

5·Some of the victims are complaining loudly about the uneven distribution of emergency aid.

一些受害者正大声地抱怨紧急援助的不均衡分配。《柯林斯英汉双解大词典》

投诉

1·My first attempts at complaining were kind of tentative.

我头几次的投诉尝试都有点儿犹豫。《柯林斯英汉双解大词典》

2·Complaining is usually most effective when it is done politely but firmly, and especially when the consumer can demonstrate what is wrong with the item in question.

投诉时语气礼貌且态度坚决通常是最有效的，尤其是当消费者能说明这个物品哪里出了问题时，更加如此。

3·I've been getting reports of you guys complaining to the dining hall staff 'cause you overslept but you still want your pancakes.

我不断接到你们投诉食堂工作人员的报告，因为你们睡过了头儿，却还想吃薄饼。

4·If you are unfortunate enough to live somewhere noisy, persist with complaining to your local council.

如果你的生活环境不幸比较吵，请一定要坚持去居委会投诉。

5·Many e-shoppers have become all too familiar with this feeling of being let down and have, in fact, given up complaining.

其实很多网购者都会很熟悉这种失望的感觉并且放弃投诉。

(1)stop complaining别发牢骚；不要抱怨