n.very small free-living arachnid that is parasitic on animals or plants; related to ticks

1. The acarids in the sample were identified under the microscope.
   樣本中的螨類在顯微鏡下被鑒定出來。
2. Farmers often use pesticides to control acarids that infest their crops.
   農(nóng)民經(jīng)常使用殺蟲劑來控制侵染作物的螨類。