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1.infest plants or a place 大批出没于
pests like aphids which infest cereal crops.
像蚜虫那样大肆侵害谷类作物的害虫。
2.project a film or picture onto 投映
The team tried projecting the maps with two different projectors onto the same screen.
该组尝试用两台不同的放映机将地图投映在同一屏幕上。
3.seal off 封闭
Windows are usually sealed off.
窗户通常是封闭的。
adj. 担忧的，关心的
