The actual run begins at 9 am but the runners start arriving at about 8:45.

跑步活动实际上于上午9点开始，但跑步者们在8点45分时就陆续到场了。

youdao

But the runners' forms were not affected by the extra weight, Dr. Tanaka said.

Tanaka博士表示跑步者的表现没有受到负重的额外影响。

youdao

But the runners would know where family and friends had gathered along side, to watch their progress.

但跑步者们会知道聚集在一边的家人和朋友们，看他们的进展。

youdao

But the study found that barefoot runners generally land on the front or middle of their foot.

VOA: special.2010.02.03

But Roger Bannister continued to train and work hard, not harder than the rest of the runners, but as hard as the top runners in the world.

但Roger，Bannister坚持苦练，不比别的跑手练得更苦，但和世上别的跑手一样苦练。

哈佛公开课 - 幸福课课程节选

But instead of wheels, it sits on steel runners that race along the ice.

VOA: special.2010.02.10

The aim is to freeze the runners, but at the same time blur the background with a streaky effect to show speed.

BBC: Picture power: Running for gold

This time, three women are among the four front-runners but, if the opinion pollsters are right, they are all lying behind Esko Aho, the (male) leader of the Centre Party.

ECONOMIST: Finland

Mongolia outlawed the trade in 1924, but bone runners have always operated from the Gobi, because they have found outsiders willing to buy fossils.

NEWYORKER: Bones of Contention