They were working frantically in the fear that an aftershock would jolt the house again.他们拼命地干着，担心余震可能会使房子再次受到震动。They were already under stress, thanks to the aftershock of last year's drought.去年遭受的旱灾让他们心有余悸、倍感忧虑。Me...
Snow Puppies is a ski school for 3 to 6-year-olds.“雪狗之家”是一所针对3至6岁儿童的滑雪学校。He bent to a squat and gathered the puppies on his lap.他弯腰蹲下，把小狗们都抱到自己腿上。a litter of puppies一窝小狗...
The basic concepts of colorimetry were expressed by Grassman in 1853.测色学的基本概念早于1853年由格腊斯曼加以阐述.The content of ginsenoside in Panax quinquefolium L was determined by colorimetry.用香草醛-冰醋酸比色法测定西洋参中总皂甙的含量.Methods: The content...