求翻译：目前,我省高速公路采用的水泥稳定碎石及石灰、粉煤灰稳定碎石两种半刚性基层。具有强度高、刚度大、整体好的优点,但有其致命弱点: (1) 当含水量和温度变化时,易产生规则的干燥收缩裂缝和温度裂缝,并会引起路面面层在一定位置对应开裂,习惯上称为半刚性基层的反射裂缝,会直接导致该处受雨水侵蚀。在高速行车作用下,不透水半刚性基层顶面受层间有压水冲刷,出现局部破损从而导致沥青混合料松散破损并发展为啃边、网裂和坑槽等病害。(2) 如半刚性基层养护不到位和管理不力,基层顶面常易被松散的尘粒裹覆,使基层和面层分离形成一个滑动状态的“工作面”,从而导致沥青面层在行车水平力作用下产生推移、搓板和坑槽等病害。(3) 半刚性基层稳定性的好坏直接决定面层是否出现龟裂、沉陷和翻浆等结构性损坏。是什么意思？

At present, our province Expressway cement treated crushed stone and lime and fly ash stabilized macadam of two semi-rigid base. With high strength, stiffness, good overall advantages, but has fatal weaknesses: (1) when temperature changes and moisture, drying shrinkage crack of temperature cracks and easy to produce rules, and can cause cracking of pavement surface layer in a certain location, traditionally referred to as reflection crack of semi-rigid, eroded by rain will lead directly to the Department. Under the effect of high speed driving, impervious semi-rigid pressure between the top layer of water erosion, local damage occurred resulting in loose broken of asphalt mixture and development for diseases such as biting edges, network splitting and pit. (2) ineffective if conservation is not in place, and management of semi-rigid base, base top surface easy to loose wrap covered in dust, slide the status at the grassroots level and the surface layer separation to form a "face", resulting in the road asphalt surface under horizontal force generated over, washboard on and pot holes and other diseases. (3) semi-rigid direct decisions on the stability of surface cracking, subsidence and frothing, structural damage occurs.