ten to one
US /tɛn tu wʌn/
UK /tɛn tu wʌn/

1.
十中八九, ほぼ確実に
very likely; almost certainly
:
•
Ten to one, he'll be late as usual.
十中八九、彼はいつものように遅れるだろう。
•
It's ten to one that the train will be delayed.
十中八九、電車は遅れるだろう。
十中八九, ほぼ確実に
very likely; almost certainly