a. 中级的, 中等的, 次要的, 第二的, 从属的, 辅助的
Secondary forests in the Amazon are different from Texas pines recovering after wildfires or the Arctic timber woods that cover much of Sweden.
六级 · CET-6 2026年6月 第2套
It put $9.5 million into Cuango, a 1,455-hectare property on the Caribbean coast of Panama that combines a commercial cocoa tree plantation with timber extraction from a sustainably managed secondary forest.
六级 · CET-6 2026年6月 第2套
Barú's former grazing lands are now thriving woods and the property boasts over 150 hectares of secondary forests with no intervention from humans.
六级 · CET-6 2026年6月 第2套
We find that if pupils take part in Design Ventura in Year Nine it can be the trigger which leads them to opt for it at General Certificate of Secondary Education, so we are helping to keep alive something which is crucial to industry and entrepreneurship.” 36.
四级 · CET-4 2025年6月 第1套
Science instruction can be found at all levels of public education with most secondary schools offering classes on biology, physics, and chemistry.
六级 · CET-6 2022年6月 第2套