With a strong poison spray aimed at a bunch of flying insects, it's easy to imagine several of them falling together at the same time. Because flies are small and dirty creatures, we do not much care if many die at once. However, when it comes to humans, we care very much. When a large number of people, such as soldiers, are killed at one time from enemy fire, we may apply this idiom. It is also used regarding a large number of people falling ill from a mass sickness in a short space of time. Strangely, despite the unsympathetic image of comparing humans with flies, this idiom is used as often regarding friendly forces or groups of people we care about, as it is used regarding foes.
Spray
1. 浪花,水花,飛沫
We parked the car by the sea and it got covered with spray.
我們將汽車停在海邊,汽車上濺滿了浪花。
2. 噴霧;噴霧狀物
A spray of salt water hit her in the face.
飛濺的海水打在她的臉上。
3. 噴霧器
4. 噴灑液,噴液
Did you bring along some insect spray?
你有沒有帶些殺蟲噴液來?
Space: 持續(xù)時間
He had twelve phone calls in the space of an hour.
他在一小時內(nèi)接了十二只電話。
Foe
1. 敵人,仇敵
This is the most serious challenge from his political foe.
這是來自他政敵的最嚴(yán)重的挑戰(zhàn)。
2. 敵軍
3. 反對者[(+of/to)]
4. 危害物[(+to)]
Tobacco is a foe to health.
抽煙危害健康。