The rocks we extract today build the infrastructure of tomorrow.
今天的美好时光,就是明天的悲伤回忆。
"It's important to write about difficult subjects in a way that children can understand."
解释:在中药中,以草本植物为主的药材占据重要地位,体现了草本植物的药用价值。
解释:形体弯曲,影子自然就曲;形体正直,影子自然就正。