Black yeast
[醫] 黑酵母
?? 詞語組成解析
black
[bl?k]
adj. 黑（色）的;黑色人種的;黑暗的;不加牛奶的;
n. 黑色;黑人;黑顏料;黑暗;
v. 使變黑;抵制;拒絕;使變黑暗;
yeast
[jist]
n. 酵母（菌）;酵母粉，酵母餅，酵母片;泡，泡沫;動亂，激動;
vi. 發酵;起泡沫;
??? 情景例句
Keep right unless overtaking.
要靠右駕駛，除非超車。
Business before pleasure.
事業在先，享樂在后。
lack of physical and mental energy, both of which are essential in turning out and throwing away, and sentiment.
一是體力，精力均告不佳，這二者是清除無用的東西必不可少的因素；另一原因是感情因素。