I was ascertaining whether the cellar stretched out in front or behind.
我当时是要弄清楚地下室是朝前还是朝后延伸的。
The ascertaining or fixing of the quantity, quality, position, or character of something.
弄清楚某事物的数量，质量，位置或特征。
After ascertaining the phosphating condition, the use and maintenance of the phosphate solution was studied.
确定了磷化条件后，又对磷化液的使用及维护进行了研究。
Ascertaining the object of study definitely is the premise of social science research.
二明确地界定研究对象是进行社会科学研究的前提。
Ascertaining the object of study definitely is the premise of social science research.
二明确地界定研究对象是进行社会科学研究的前提。
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