O hem İspanyolcada hem de İtalyancada yeterli.
- She is proficient in both Spanish and Italian.
İngilizcede yeterliyse, onu işe alırım.
- If he's proficient in English, I'll hire him.
Tom oldukça becerikli, değil mi?
- Tom is quite proficient, isn't he?
Tom uzman bir keskin nişancıdır.
- Tom is a proficient marksman.
Fransızca'da uzman birisini arıyoruz.
- We are looking for someone who is proficient in French.
By constant playing and experimenting with these he learned to tie rude knots, and make sliding nooses; and with these he and the younger apes amused themselves. What Tarzan did they tried to do also, but he alone originated and became proficient.