The models proposed for the development of the limb place quite a big burden on the cells' response to apparently simple signals.

They understood the simple signals, mumbled the good news among themselves while Silk's car was wheeling away.

Sending a relatively simple sensory signal is difficult enough.

"It seems a bit of trouble for a simple signal," Wulfgar added.

The straight lines on the left side of the code are simpler signals designed to be picked up by the scanners first.

But the sound of a simple signal can be boring after a while.

These simple signals conveyed tension but she did not know how to read them accurately.

We can't even send a simple signal to the Fair Lady.

A simple signal was the best communication he could manage, but it worked.

But this very night, the long-standing debt would be cleared in the puff of a simple signal.