学习48小时后进行记忆测试，方法同上。
Memory ability was tasted 48 hours after learning test with the same methods.
针对前一种情况，主要是注意工作段内有没有空气，解决方法同上。
In the former case, mainly pay attention to work in period without air, the solution as above.
同时，要把遇到的生词用铅笔做记号，然后，一一记住，保持记忆的方法同上。
Meanwhile, pencil every new word and remember them by heart. As for how you can keep remembering them, it is the same way as above.
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