她整个身体开始弯曲，搞得梯子倾侧起来。Her whole body began to buckle, unbalancing the ladder.抬起一只脚，弯曲脚趾，使脚尖朝下。Raise one foot, curl the toes and point the foot down-wards.操作杆进一步弯曲，线轴发出刺耳的吱吱声。The rod bent double, the reel shrieked and ratche...
This is an impeccably researched and very readable book.这本书中的研究缜密透彻，可读性很强。His books on diplomatic history were eminently readable.他写的有关外交史的书可读性非常强。The book is clear, readable and adequately illustrated.这本书明白易懂，可读性强，插图丰富。...
卵子排出后可存活12至36小时。Once the ovum is released it has a lifespan of 12 to 36 hours.在同一发情期排出两个或数个卵子.Two or more ova are shed during the same heat period.到第11天卵子着床嵌入子宫内壁.By day 11 the ovum begins to attach and implant in the li...