1.split from 脫離,從...分離
例句:The more mutations in the gene, the faster that species has evolved since it split from the common ancestor.
從共同的祖先那里分離之后,這種基因中的變異越多,說明這個物種的進化就越快 。
2.tie the knot 結婚
例句:My other suggestion is that you be engaged for six months or more before you actually tie the knot.
我的另一個建議就是在你決定結婚前,你起碼得訂婚六個月,甚至更多 。