Boston Dynamic's robot, RHex, is an amazing piece of work that can run over various terrains.

'needless to say' is often introduced as an idiomatic expression in the infinitive.

"Can I have it?" "Sorry, I drank it at the hotel!" "Thought so."

I say "should", because theses written in the present tense are still seen around and about.

'-osity' is an abstract noun word ending created from the ending of an '-ous' adjective.

"By the way, do you know what a Shinto shrine is?" "I've a little bit of knowledge on the subject. It's a religious facility where that which is the object of worship, that called the genius loci, is enshrined."

"'Yuki', so you do put your own name in." "Yup, isn't that roleplaying's essence?"

"Eh? Where's Keiko?" "Said she's got a parent and child meeting so she'll be late."

"How far are you going?" "I'm heading for Chicago."

"Will it clear up soon?" "I'm afraid not."