Is ‘find out about’ a phrasal verb or ‘find out’ + ‘about’? If the latter is true, does it mean ‘find out’ could be used as a v.i.? – Yes, the former and yes. ‘I found out what had happened, but it was no pleasure finding out.’
Does both of the ‘clear’ have a sense of enough or no less than? – Two clear feet = two entire feet; clear of the ground = free of the ground; not touching the ground.
Is ‘clear of the ground’ = ‘clear off the ground’? If so, how could it be so? – Yes, the front 1/3 of his body is vertical in the air like THIS.
Does those '-ling’s always have a sense of baby? – Offhand, yes-- or small things, like ‘seedlings’.
Does it mean: the head of Nagaina whizzed across/through just under him? If so, why by? – Yes. ‘by’ = past.
Where to run in? – run in close in order to attack.
How to understand ‘dropped his head far between his forelegs’? – Bit down on the snake as Rikki straddled atop it.
Does ‘bitten as high up the back as he could get hold’ mean: bitten as close to the head (high up the back) as he could reach (get hold)? – Yes
Does ‘roll away’ mean ‘pull away’? – Sort of: roll away. Rikki releases his bite and tumbles away from the snake.
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