三角形内角总和为180度。The sum of all the angles of a triangle is 180 degrees.桌上有一只用珠子串成的小三角形作装饰的盒子。On the table sat a box decorated with little pearl triangles.这一设计由淡色的3个长方形和3个三角形构成。This design is in pastel colours with three rec...
Kings and princes played at war the way Englishmen play at hunting.过去的国王和王子们在战争中游欢正象英国人在打猎中寻欢作乐一般.Whenever the Italian city - states were at war with each other, Hawkwood used to hire his soldiers to princes who were wil...
From the methanol - sewage sludge - enrichment culture one methanosarcina, two vibrios and one bacteroid have been isolated.经对该富集培养物的分离培养,已分离出4株厌氧细菌,其中一株为甲烷八叠球菌, 两株为弧菌,一株为杆菌....