Young children being raised bilingual have to follow social cues to figure out which language to usewith which person and in what setting.
从小在双语环境下长大的孩子必须关注社交线索,以弄明白在什么环境下与什么人交流该使用哪种语言。
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Other studies show that simply providing the facility for people to compare their energy usewith the local average is enough to cause them to modify their behaviour.