When building platypusaries in zoos and sanctuaries it is essential to ensure that man-made tunnels are tight-fitting.

I'll see you later down the pub.

If it is essential in our interests to maintain a quasi-permanent position of power on the Asian mainland as against the Chinese then we must be prepared to continue to pay the present cost in Vietnam indefinitely and to meet any escalation on the other side with at least a commensurate escalation of commitment of our own.

ignore + -tion → ignortion