Dear Nina, Piya and friends,

here is the next paragraph of the sutta.

"Diigha.m vaa assasanto 'diigha.m assasaamii'ti pajaanaati,
long / or / breathing in / long / breathe in / knows clearly
"Breathing in long, he knows clearly: 'I breathe in long',

* diigha (adj.) long.
* assasanto (present participle of assasati) breathing in.
* assasaami (first person, sing.) I breathe in.
* pajaanaati (v.) knows clearly.

diigha.m vaa passasanto 'diigha.m passasaamii'ti pajaanaati;
long / or / breathing out / long / breathe out / knows clearly
or, breathing out long, he knows clearly: 'I breathe out long';

* passasanto (pr.p. of passasati) breathing out.
* passasaami (1st per., sing.) I breathe out.

rassa.m vaa assasanto 'rassa.m assasaamii'ti pajaanaati,
short / or / breathing in / short / breathe in / knows clearly
breathing in short, he knows clearly: 'I breathe in short',

* rassa (adj.) short.

rassa.m vaa passasanto 'rassa.m passasaamii'ti pajaanaati.
short / or / breathing out / short / breathe out / knows clearly
or, breathing out short, he knows clearly: 'I breathe out short'.

'Sabbakaayappa.tisa.mvedii assasissaamii'ti sikkhati;
one who experiences entire body / will breathe in / trains himself
'I will breath in as one who experiences the whole body', he trains
himself;

* sabbakaayappa.tisa.mvedii = sabba+kaaya+p+pa.tisa.mvedii : one who
experiences entire body.
* assasissaami (future tense) will breathe in.
* sikkhati (v.) trains oneself.

'sabbakaayappa.tisa.mvedii passasissaamii'ti sikkhati;
one who experiences entire body / will breathe out / trains himself
'I will breathe out as one who experiences the whole body', he trains
himself;

* passasissaami (future tense) will breathe out.

'passambhaya.m kaayasa'nkhaara.m assasissaamii'ti sikkhati;
calming / bodily function / I will breathe in / trains himself
'I will breathe in calming the bodily function', he trains himself;

* passambhaya (causative) to calm.
* kaayasa'nkhaara = kaaya + sa'nkhaara : bodily function.

'passambhaya.m kaayasa'nkhaara.m passasissaamii'ti sikkhati.
calming / bodily function / I will breathe out / trains himself
'I will breathe out calming the bodily function', he trains himself.

Please correct me if I am wrong.

metta,
Yong Peng