1·Many people spontaneously stood up and cheered.
许多人自发地站起来欢呼。
—— 《柯林斯英汉双解大词典》
2·It's whether a species has developed this ability spontaneously.
是一个物种是否自发地发展了这种能力。
3·People spontaneously create their own social webs to get their work done.
人们自发地创建他们自己的社会网来完成工作。
4·It did not matter if the researchers told them to make choices, or if it was a spontaneously made choice, or if making the choice had consequences or not.
是研究者要求他们作出决定、还是他们自发地进行选择；或者他们的选择是否有结果，这些都不重要。
5·Hair cannot suddenly or spontaneously change color.
头发不可能突然或自发地改变颜色。
1·Not only do brain cells alter their connections, but additional neurons can also spontaneously form, a process called neurogenesis.
不仅会出现脑细胞改变连接方式的情况，而且还会自然地形成更多神经细胞，这样一个过程被称作神经形成。
2·On October 9, 10, or over the weekend of October 11-12, you may decide very spontaneously to take a little trip to a nearby town. Excellent idea!
在10月9号、10号或10月11号到12号周末的时候，你可能会非常自然地决定要到附近的小镇做次短途旅行。非常好的主意！
3·Only this one I designed. The other two were done spontaneously, without preconceptions.
只有这个我设计了。其他两份是自然地做出的，没有预想。
4·Legends tend to arise spontaneously and are rarely traceable to a single author or point of origin.
都是传说是很自然地产生，并且很难追踪到某个作者或某个来源点。
5·Since 1960s, linguists and psychologists are more and more interested in the fact that normal children can acquire their mother tongue spontaneously and without difficulty.
从二十世纪六十年代起，语言学家和心理学家对儿童自然地、毫不费力地习得母语越来越感兴趣。
1·An overwhelming urge to keep moving the legs, a deep ache, or legs that jerk spontaneously disrupts sleep and causes tiredness.
压倒性的尽力使腿部移动，疼痛感会加重或者腿不由自主地抽搐会影响睡眠并导致疲劳。
2·Energy returns, anger disappears, you begin smiling spontaneously.
精力恢复、愤怒小时，你开始不由自主地微笑。