The prime mover may be a gas reciprocating engine.原动机可能是燃气往复式发动机.Almost all automobiles use the reciprocating engine.几乎所有的机动车都使用往复式发动机.Compressor may be reciprocating positive displacement or centrifugal.压缩机可以是活塞式、螺杆式或离心...
Other amenities, less commonly available, include a library and exercise room.还有一些不太常有的设施，包括图书馆和健身房。Parsley is probably the most commonly used of all herbs.欧芹可能是用得最多的一种药草。A little adolescent rebellion is commonly believe...
The pineal gland secretes melanin during times of relaxation and visualization.松果体在放松时分泌黑色素是明白无误的.For example, the archegonium ( female organ ) of the moss Funaria secretes sucrose.例如藓类颈卵器 ( 雌性器官 ) 分泌蔗糖.The endocrine dis...
Helium is a very light gas.氦是一种非常轻的气体。A synthetic element produced in trace quantities by helium isotope bombardment of curium.锎一种合成元素,由氦同位素轰击锔可得到微量的这种元素.helium balloons for the children’s party儿童聚会用的氦气球Helium is a gas u...
You won’t succeed if you are apathetic.要是你冷淡,你就不能成功。Apathetic busyness and puzzled thinking could never prevent the brilliance before.漠然的忙碌,混沌的思索,遮挡不住曾闪耀的光辉.Even the most apathetic students are beginning to sit up and li...