You must make sure that every instruction and every possible situation have been tested.

你必须确保每一条指令和每一种情况都已经被测试过。

Before you can go about doling out incentives , you must make sure that you have a credible and responsible system in place .

在你真正实施奖励之前，你要确保自己已经建立了一套可靠且负责的制度体系。

In order to do the above, you must make sure that you are regularly holding conversations with native English speakers.

为了做到以下几点，你必须保证经常和母语为英语的人士进行交谈。

Keep in mind, though, for this test work, you must make sure that your diamond is completely clean and free from oil or dirt.

记住，这个方法有效的前提是，要保证钻石十分干净，没有油污和尘土的污染。

As the project manager, you must make sure that the work is properly understood and agreed to by the project sponsor and key stakeholders before the project work begins.

做为一个项目经理，你必须在项目开始前确定项目的各项工作是容易被大家理解的，并且已经得到了项目发起人以及关键的项目利益相关者们的同意。