She is always concerning herself over him.
她一直在关心他。
She is always concerning herself over him.
她一直在关心他。
There is a lot of concern over the amount of herbicides and pesticides used in farming.
人们对农业上灭草剂和杀虫剂的用量非常担忧。
声明：
上
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不代表本软件的观点；若发现问题，欢迎向我们指正。
