In the case where this does not exist, then the result might be a loader being invoked, which will load the value from a back-end datastore (4).
如果它不存在，那么结果可能会是一个正被调用的加载程序，它会从一个后端数据存储(4)加载值。
2
Currently the loader passes the internal representation of the code back to Ruby for execution.
目前，加载器会把代码的内部表示返回给Ruby来执行。
3
The paper introduces a new style of loader which universally used for heading faces with heavy saddle back in roadway and weak stability of face surrounding rock.