In sub-Saharan Africa today, for instance, gross investment accounts for roughly 15% of national income.
例如,在如今的撒哈拉以南的非洲国家,总投资大约占国民收入的15%。
For instance, some people need it for social relationships.
例如,有些人需要它的社会关系。
You begin to infer a context for the text, for instance, by making decisions about what kind of speech event is involved: Who is making the utterance, to whom, when and where.
例如,你可以通过判定文本涉及何种类型的语言情景,来推测文章的语境:是谁在说话,对谁说话,何时何地。
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