She balled the handkerchief up and threw it at his feet.她把手绢揉成一团，丢在了他的脚边。Brian's face balled up like a fist.布赖恩的脸鼓得像个拳头。I picked up the balled socks.我把卷成团的袜子拾掇起来。...
Gimbal lock is a phenomenon that easily affects Euler angle representations.万向节锁是一种容易影响到欧拉角表现的现象.You can get to the beach easily from the centre of town by tram.你从市中心乘有轨电车到海滩会很方便。Anyone with a discerning eye can easily s...