If for example you switch workspaces frequently, and forgot to remove projects from previous workspaces, you could rest the Unit Test Environment back to its initial state.
例如，如果您经常切换工作区，并且忘了从先前的工作区中删除项目，您可以将单元测试环境恢复到初始状态。
2
They then found that the switch of a single DNA unit in the gene determines whether a person has wet or dry earwax.
他们发现基因中dna单链上的基因单元具有像开关一样的物质，该物质决定了人们的耳垢类型。
3
You can switch back and forth between data and code sections, but when the program is assembled it will bring all of each section together into one unit.