You got to be familiar with airfoil, drag, lift, and thrust,得先了解螺旋漿,拉升,俯沖,推進(jìn)等等
familiar with熟悉
I am not really familiar with the local laws.
實(shí)際上我對當(dāng)?shù)氐姆刹⒉皇臁?/p>
I am of course familiar with your work.
我當(dāng)然熟悉你的工作。
I'm pretty sure this is a typo.這絕對是個印刷錯誤
pretty sure相當(dāng)肯定
I'm pretty sure,but let me check for you.
我想應(yīng)該有,但是讓我查查看。
I'm pretty sure (that) he'll agree.
他會同意的,對此我有相當(dāng)?shù)陌盐铡?/p>