采集人员必须不留下垃圾，不引起森林火灾，合法捕猎。
Collectors must not leave behind litter, contribute to forest fire, illegal hunting, etc.
例如，有时人们在山上吸烟并随手丢弃烟头引起森林火灾。
For example, sometimes people smoke in the mountain and leave their cigarette end conveniently, which cause the forest fire.
引起森林火灾的火源主要是由生产用火和生活用火引起的。
The main fire sources are caused by productive and living activities.
一份报告显示，90%的森林火灾是人为引起的。
90% of forest fires are caused by humans, according to a report.
森林火灾时常由碎玻璃或香烟头引起。
Forest fires are often caused by broken glass or cigarette ends.
奇怪的是，虽然有98%的森林火灾是由人类活动引起的，但由纵火犯引发的火灾却很少。
Though human activity is responsible for 98% of all wildfires, arson starts a surprisingly small proportion of them.
森林火灾大多是由破碎的玻璃或人们随手扔掉的未熄灭的烟头引起。
Forest fire are often caused by broken glass or by cigarette ends which people carelessly throw away.
森林火灾也能由自然引起。
香烟的火星引起了这场森林火灾。
森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。
Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
他抽烟引起了这起森林火灾。
希腊经常发生自然灾害，这些灾害主要是由于地震引起的，其他一些更为次要原因还包括洪水、森林火灾、暴风雨等(台风不是问题)。
Greece often faces natural catastrophes, mainly due to earthquakes and to a much lesser degree floods, forest fires, storms e. t. c. (Typhoons are not a problem).
然而人类活动引起的森林火灾现在占全部森林火灾发生总数9成以上。
However, forest fires caused by human activities, all the forest fires now account for about 90 percent or more.
然而人类活动引起的森林火灾现在占全部森林火灾发生总数9成以上。
However, forest fires caused by human activities, all the forest fires now account for about 90 percent or more.
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