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1. 农民们正在把田里的庄稼残茬烧掉。
   The farmers are burning off the stubble from the fields.
2. 农民们既然已经收获了庄稼，现在正在把田里的麦茬烧掉。
   Now that they have gathered in the crops, the farmers are burning off the stubble in the fields.
3. 农民们在收割完庄稼后常烧茬子。
   Farmers often burn the stubble after they have cut the corn.
4. 她总是找（我的）茬儿。
   She’s always finding fault (with me).

(Source: dict.cn)