彼らは幸せなときに踊る

Meaning
they dance when they are happy

Vocab used in this sentence

he, his, him, boyfriend
la, ra, from, et al
a, the, is, am, are, will
幸せ
happy, happiness, happily
a, the, na, nan, nai
とき
when, time, moment, occasion, ibis
in, to, on, at, into, upon
踊る
dance, dancing, to dance

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