And microblog is a tree hole filled with our laughter and sorrow.

微博是个树洞，装满人们的欢笑与哀伤。

youdao

Local people are so proud of the four miracles of the ancient Courier station, namely the city walls, ancient temples, Shepard Spring and ancient tree hole.

古驿站人引以为傲的四绝是：城墙，古庙，“牧羊泉”和古树洞。

youdao

Jordan said Burkhart died when she was struck by a tree at a popular swimming hole near the park's Abrams Creek campground.

CNN: Crews search Smoky Mountain wilderness after deadly storm

One morning in September 1940, a boy called Marcel Ravidat was exploring the hills above Montignac when his dog, Robot, uncovered a hole beneath a tree root leading to a cave.

BBC: The perfect trip: Dordogne

At the edge of his tree line is a forbidding 4-foot hole in the ground.

FORBES: Magazine Article