The tail is fixed on the model plane with nails; it cannot come off.

模的尾是用钉子钉在上的, 不会下来。

Be careful lest you (should) fall from the tree.

小心, 不要从上下来。

Be careful not to fall off the ladder.

当心别从梯子上下来。

Aen mak gwnz faex doek roengz daeuj lo.

上有个果子下来了。

He fell from a tree and his leg fractured in three places.

他从上下来, 腿三处骨折。

I recognized her when her wig fell off.

她的假发下来时我认出了她。

She blinked away her tears.

她眨眼使下来。

Be careful not to fall.

当心别下来。