1.frozen embryo 冷凍胚胎
例句:Each of these children began his or her life as a frozen embryo that was created for in vitro fertilization.
所有的這些孩子在生命的初期都曾是為人工授精而創(chuàng)造出的一個冷凍的胚胎 。
2.break a world record 打破世界紀(jì)錄
例句:Game organizers are counting on the contest being long enough to break a world record.
賽事組織者計算出這場比賽時間的長度已經(jīng)打破了世界紀(jì)錄 。