有差不多半个世纪，他被允许在他家乡的街上不受打扰地进行哲学研究。
For close on half a century this man was allowed to philosophise unhindered on the streets of his hometown.
黑猩猩无疑是成功的掠食者，但它们种群之间的战争并非天性使然，多半是人类侵占它们的栖息地而导致。
Chimpanzees are undoubtedly successful hunters, but the "wars" seen between neighbouring bands seem to have been brought on by human encroachment on their habitat rather than original sin.
但是由美国皮肤病学会(the American Academy of Dermatology)发布的新的调查显示，没有获得这个信息的女性多半会错误地认为日光浴床比天然太阳光安全。
But a new survey by the American Academy of Dermatology suggests the message isn't reaching female tanners who might falsely believe that tanning beds are safer than natural sunlight.
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