To answer the first part of your question, I'd like to say that our studies were very extensive.
你问题的第一部分,我要说的就是我们的研究非常广泛。
The whole village has been working day and night gathering and threshing this year's crop before the September rains.
全村的人都日夜奋战,要赶在9月的雨季之前把今年的庄稼收获上来,打完场。