The report said that an increase in hurricane and tropical cyclone strength since 1970 more likely than not can be attributed to man-made global warming.

该报告说1970年以来飓风与热带气旋的增强更可能归结于人为的全球气候变暖。

So only a small crowd, say, a grade school class taking a field-trip to the park, would have to gather around that bench before it became more likely than not that two people shared a birthday.

所以当一小群人——比方说在公园游玩的小学的一个班——聚集在长椅周围时，很可能就有两个人生日相同。