The dairy supplier's report noted that gadflies reduced milk output at several partner farms this summer.

乳品供應商的報告指出，今年夏天牛虻導致數家合作農場的牛奶產量下降。

Our tour guide warned guests to wear long sleeves because gadflies bite near the horse stables.

我們的導遊提醒旅客穿長袖，因為馬廄附近的牛虻會咬人。

The shipping manager approved insect netting after gadflies bothered the cattle during transport last month.

上個月運輸途中牛虻騷擾牛群後，運輸經理核准了防蟲網。