... nhiing dugc sft dyng trong cdc mdi trudng dan ngft (mdi trudng trong dd tieng Anh Id tieng mp de hay ngdn ngft thft nhat), trong cac moi trudng song ngft (moi truang trong dd tieng Anh la ... thftc), md cdn cd trong nhimg mdi trudng trong do nd la mpt ngoai ngft. Nd khdng nhftng dugc sft dyng de giao tiep ben trong cac qudc gia ndi tieng Anh ma cdn (luge sft dyng trong cac sy kipn ... Vipt Nam ldn den mftc ma nd khdng chi dirge day trong hp thdng gido dye qudc dan rna cdn ca d ngoai hp thdng gido djic qudc dan. Trong khu vyc ngodi hp thdng giao dye qudc dan, Vipt Nam...