我们的调查显示这些过敏多为一次性反应。Our survey revealed that these allergies were mainly one-offs.对猫类过敏是哮喘病发作最常见的诱因之一。Allergy to cats is one of the commonest causes of asthma.有些孩子会对豆浆过敏。Soya milk can cause allergic reactions in some chil...
Looking through the eyepiece you will see two black circles.透过目镜你可以看到两个黑色的圆环.The star test is lightning - fast and requires only a good high - power eyepiece.光轴矫正是快速的并且要求需要高倍数的目镜.The simple negative element Barlow increa...