Where does “切爾西” come from?

切爾西 (Chinese) comes from English Chelsea, from Old English Cealchyþ, from Old English cealc, from Proto-Germanic *kalk, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “切爾西”, step by step

Step	Language	Word	Meaning
1	English	Chelsea	OS grid ref TQ2778
2	Old English	Cealchyþ	—
3	Old English	cealc	plaster, mortar; chalk
4	Proto-Germanic	*kalk	—
5	Latin	calx	limestone; chalk; the finish line
6	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Ancient Greek χάλιξ →Every word from Latin calx →Every word from Proto-Germanic *kalk →