yacht
n. a sailing boat； a large， often motordrive boat 快艇，游艇。
sail a yacht 驾驶游艇/a racing yacht 比赛时用帆船（或快艇）。
Her yacht is anchored in the harbour.
她的游艇停泊在港口内。
yell
n.& v. to make a loud cry or shout as of fear or excitement； a loud cry of fear or excitement 呼喊，喊叫。
yell with fright 吓得叫喊起来/yell for the team 为球队呐喊鼓劲/yell goodbye to one s friends 向朋友们高喊再见/yell at sb. 对着某人大叫大嚷。
He let out a terrified yell at the sight of the snake.
她一看到这条蛇就恐怖地大叫起来。
yoke
n. shaped piece of wood fixed across the necks of two animals (esp oxen) pulling a cart， plough， etc 轭；（尤指）牛轭 (pl. unchanged 复数不变） two oxen working together 共轭牛（共同工作的一对牛）
put a yoke on 把轭套在/smash the yoke of racism 砸碎种族主义的枷锁。
Both countries had recently thrown off the yoke of slavery.
两国都刚刚摆脱奴隶制的枷锁。
youngster
n. a young person， esp. a boy 年轻人，小伙子。