pig unit的用法和樣例：
例句
- In summary I would certainly recommend all pig farmers should be using Farmer Pecks Performance Booster.
總之，我理應推薦所有的養豬場(chǎng)都來(lái)使用農派克飼料添加劑。 - There are no pig farms in Afghanistan and no direct civilian flights between Kabul and Mexico.
阿富汗沒(méi)有養豬場(chǎng)，喀布爾與墨西哥之間也沒(méi)有直飛的民用航線(xiàn)。
