However, many low income countries in sub-Saharan Africa, the Indian subcontinent and in the Newly Independent States do not use the vaccine.是什么意思_However, many low income countries in sub-Saharan Africa, the Indian subcontinent and in the Newly Independent States do not use the vaccine.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句