W: I've come about your wools. According to our market survey, wools are likely to find a ready market in our country.
W：我是为了你们的羊毛而来的，根据我们的市场调查，羊毛在我们国家很容易找到一个既成市场。
W: I think the groups for survey are too limited.
我觉得调查的群体太局限了。
Weed survey was conducted by sampling methods of inverted W-pattern to determine the species composition and structure of weed communities in maize fields in Hebei Province.
采用倒置“W”取样法对河北省玉米田杂草进行了调查，以明确田间杂草的种类组成及群落结构。
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