1.Burma (Myanmar) and Guatemala are the principal sources of modern gem jadeitite, and Canada of modern lapidary nephrite.
缅甸和危地是现代翡翠的主要产地,而加拿大是现代宝石的主要产地。
2.Between 1969 and 1977, the Institute of Nutrition of Central America and Panama (INCAP) conducted a study of growth and development of children living in 4 villages in Guatemala.