We're studying a
substitution for the medicine.
我们正在研制一种该药的替代品。
They use cream in
substitution for sugar.
他们用奶油代替糖。
Tom made two
substitutions in the second half.
汤姆在下半场两次换人。
She used a
substitution cipher to encode her message, making it difficult for anyone else to read.
她使用了替代密码来编码她的信息，使得其他人很难阅读。
In algebra, solving an equation often involves making a
substitution to simplify the problem.
在代数中，解方程常常需要通过替换来简化问题。
The coach made a
substitution in the second half of the game, replacing the injured player with a fresh substitute.
教练在比赛的下半场做出换人调整，用一名健康的替补球员换下了受伤的球员。
Due to allergies, she had to find a
substitution for wheat flour in her baking recipe.
因为过敏，她不得不在烘焙食谱中寻找小麦粉的替代品。
The teacher allowed students to do a project instead of a test as a form of
substitution for their final assessment.
老师允许学生以做项目代替考试，作为期末评估的一种替代方式。
In football, a tactical
substitution can completely change the flow of the game.
在足球中，一次战术性的换人可以完全改变比赛的走势。
Vegan cooks often use nutritional yeast as a
substitution for cheese in recipes.
素食厨师常常用营养酵母作为食谱中奶酪的替代品。
The chemist found a successful
substitution for the rare ingredient, enabling mass production of the medicine.
化学家找到了稀有成分的成功替代品，使得这种药物能够大规模生产。
In linguistics, code-switching can be seen as a type of
substitution where speakers alternate between two languages or dialects.
在语言学中，语码转换可以被视为一种替代，说话者在两种语言或方言之间交替使用。
When the main ingredient was out of stock, the chef cleverly made a
substitution with a similar tasting ingredient, saving the day.
主食材缺货时，厨师巧妙地用一种味道相似的材料做了替换，挽救了局面。
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