crystallography

"My teacher explained the new math concept, and I understood it perfectly. "

"The arrangement of chairs in the classroom made it easier for the students to see the teacher. "

"The medicine helped my grandmother feel better after she had the flu. "

"My family has a different ideal for my future than I do. "

"Scientists study plants to understand how they grow. "

"The birds had built an amazing structure out of sticks and various discarded items."

"The new math textbook's experimental section focuses on fractions. "

"The teacher detailed the steps for solving the math problem. "

"The fence is determining the boundary between our yard and our neighbor's. "

"Turning the corner, I discovered a lovely little shop. I discovered that they sold widgets."

"The birds had built an amazing structure out of sticks and various discarded items."

"to allow a servant his liberty;  to allow a free passage;  to allow one day for rest"