Egg yolk culture-medium

egg [ɛɡ]

n. 鸡蛋，蛋;卵;<俚>家伙; vt. 煽动，怂恿;用蛋烹调;<俚>向人扔鸡蛋;

yolk [jok]

n. 蛋黄;卵黄;羊毛油脂;胚乳;

culture ['kʌltʃɚ]

n. 文化;[生物学]（微生物等的）培养;修养;养殖; vt. 培植，培养;

cult耕种，培养+ure抽象名词→[对心灵的]培养→人类文化

medium ['midɪəm]

adj. 中等的，中级的;普通的;平均的;半生熟的; n. 媒介物，媒质;中间，中庸，[生]培养基，培养液，颜料溶解液，[数]中数，平均，[逻]中名辞;手段，方法;中间物;

medi中间+um表名词→中间物，媒介

I didn't have the heart to tell her that she was not chosen.

我没有勇气告诉她说她没有入选。

I can't promise anything,but I'll do my best.

不敢保证，不过我尽力而为。

when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv

计算机可以使办公室人员和会计免除那些枯燥、重复的劳动。