an occasion when a group of people go around a public place picking up litter (= small pieces of rubbish lying on the ground)

We are arranging a litter pick round the centre of the village on Saturday 3rd April. 我们将于4月3日星期六在村中心安排一次捡拾垃圾的活动。

The 30 youngsters took up plastic sacks and gloves as part of a three-day litter pick. 这30名年轻人拿起塑料袋和手套，参加了为期三天的捡拾垃圾活动。

a device like a long stick with two parts on the end that can be opened and pressed together using a handle at the top of the stick, in order to pick up small pieces of rubbish from the ground, or a stick with a point on the end that can be used to do this

Street sweepers carry their litter picks in plastic bags. 街道清扫工用塑料袋装着他们的垃圾拣拾器。

Synonym: litter picker

to go around a public place picking up litter (= small pieces of rubbish lying on the ground)

An army of volunteers are engaged to litter pick. 一大批志愿者参与了捡拾垃圾的工作。

Making sure that the area is litter picked to perfection, volunteers collect rubbish and send what they can to be recycled. 为了确保这个地区的垃圾完全清理干净，志愿者收集垃圾，并尽可能送去回收。

Do your bit for the environment on Cairngorm by litter-picking on the mountain in the Big Spring Clean. 在春季大清洁活动中，去山上捡拾垃圾，为凯恩戈姆山脉的环境尽一份力。