They complain about a range of different problem反馈回来各种各样的问题
complain about抱怨; 发牢骚
Consumers are encouraged to complain about faulty goods.
要鼓励消费者对劣质商品投诉。
Stop moaning; you really have nothing to complain about.
不要再抱怨了,实际上你是没有什么事可抱怨的。
You know they, they contribute to less strokes, for instance,你知道它们会减少中风的几率
contribute to是…的原因;有助于;为…作贡献
Does smoking contribute to lung cancer?
吸烟会导致肺癌吗?
Honesty and hard work contribute to success and happiness.
诚实加苦干有助于成功和幸福。
so how do you balance it out?你会怎么抉择呢
balance out抵消; 中和
My accounts balance out for the first time this year.
我的账今年第一次收支平衡。
The good and bad effects of any decision will usually balance out.
任何决策的效果往往利弊互见。