Stalactites have to hang on "tight" to the ceiling or they might fall off.

VOA: special.2011.04.11

People are always losing a wooden leg and having parts of their limbs fall off.

人们不是丢失了一条木腿,就是缺胳膊少腿的。

耶鲁公开课 - 1945年后的美国小说课程节选

Eventually you develop a scab, as it healed, and then it would--and then the scab would fall off, and you'd be left with a scar.

愈合之后会变成一个疤,这个疤后来会脱落,你身上会留下疤痕

耶鲁公开课 - 生物医学工程探索课程节选

Stalactites have to hang on tight to the ceiling or they might fall off.

VOA: special.2009.12.07

It is easier to fall off the log than to stay on it.

VOA: special.2009.06.07

He could fall off and break a leg or arm.

VOA: special.2009.01.14

The cowboys try not to fall off.

VOA: special.2009.02.16

The Asia Pacific region led the decline with a more than 14 percent fall off Passengers for North American flights fell by more than 13 percent.

VOA: standard.2009.04.28

That could be good advice. If you strike high up on a tree with an axe, the chip of wood that is cut off will fall into your eye.

VOA: special.2010.01.17