8.The river is the boundary between the two countries.
这河是两国河。
9.a boundary that ranges from A to B
从甲地延伸到乙地边
10.Compared to supersequence boundaries, the depositional hiatus at sequence boundaries is shorter and sequence boundaries are not compatible with lithostratigraphic unit boundaries.
沉积层序面处沉积间断时间相对超层序面要短,与岩石地层单位面往往不一致。
11.lava issuing from the brim of the crater. See also Synonyms at boundary
从火山口流出熔岩 参见同义词 boundary
12.the river marks the boundary between the two regions.
这河是这两个地区分线。
13.the boundary where agnosticism ends and atheism begins.
不可知论告终和无神论开始分线。
14.There are no indecisive boundaries between the two opinions.
这两种见线分明。
15.The boundaries of that country were changed by a treaty.
那个国家边根据约有所更动。
16.The boundaries are clearly marked off on the map.
线在地图上区分得很清楚。
17.the sawtooth austenite boundaries become preferential nucleation sites of ferrite, and the sawtoothed ferrite boundaries contribute to the formation of ferrite recrystallization nucleus.
锯齿状奥氏体晶优先成为铁素体形核位置;
18.his novels blur the boundaries between criticism and fiction.
他小说模糊了文学批评与小说之间限。
19.statesmen must be cognizant of the political boundaries within which they work.