BBC Learning English:’boat’ or ‘vote’? #shorts

What’s the difference between these two sounds? Repeat after me.
Boat. Vote.
Best. Vest.
Watch my lips and teeth.
/b/ boat.
/v/ Vote.
Listen again. Which word am I saying?
Vote. Vote.
Best. Best.
Fibre. Fiver.
lobes. loaves
How many did you get right?
Can you say this sentence? Bob wore his very best vest.
boat /boʊt/ ボート
vote /voʊt/ 投票する
best /bɛst/ 最良の、最高の
vest /vɛst/ ベスト、チョッキ
fibre /ˈfaɪbər/ 繊維
fiver /ˈfaɪvər/ 5ドル紙幣（口語）
lobes /loʊbz/ 葉、耳たぶ
loaves /loʊvz/ パンの複数形
lips /lɪps/ 唇
teeth /tiθ/ 歯
Bob wore his very best vest /bɑb wɔr hɪz ˈvɛri bɛst vɛst/ ボブはとても最高のベストを着た