The boy surrendered the catapult to the teacher.那孩子把弹弓交给了老师.He fitted a pebble into the catapult and pulled back the elastic. Twang!他把石子放进弹弓里，然后往回拉动橡皮筋。“嘣”！The sting of the catapult bullet had worn off.挨的那下弹弓不那么疼啦....
Mammals arose from a fairly primitive reptile in the Mesozoic era.哺乳类起源于中生代宛若原始的爬虫类.The deposition velocity of Paleozoic, Mesozoic and Cenozoic assumes unimodal pattern.在沉积速率分析曲线上,往往是古生代 、 生代和新生代呈单峰状态.The primary coastli...
由原颗粒组成的团聚体要能保持充分的水分和养分.The aggregates, composed of the primary particles, retain sufficient water and nutrients.团聚体的形式是土壤肥沃的首要条件.The formation of aggregates is of prime importance to fertility.包括土壤的含水量 、 容重 、 土壤孔隙度 、 土壤水...
Simultaneously, the genetic source of loci loss was confirmed by genealogical analysis.同时通过家系分析确定位点缺失的遗传学来源.the cunning exploitation of loci of power对权力核心的巧妙利用Eight microsatellite loci were associated to beef performance...