- 
				           		这对探讨火山喷发规律,对火山地质地貌的准确描述均具有积极作用。
						        					            	 The knowledge is possessed of active significance for us to research volcanic activity.
								    										 
								    				            	 youdao 
- 
				           		这对探讨火山喷发规律,对火山地质地貌的准确描述均具有积极作用。
						        					            	 The knowledge is possessed of active significance for us to research volcanic activity.
								    										 
								    				            	 youdao