牙套可以帮助牙齿排列整齐。

Braces help to ___align teeth properly.

请把书架上的书本对齐摆放整齐。

Please ___align the books on the shelf neatly.

这所学校将其教学方法与国家教育标准保持一致。

The school ___aligned its teaching methods with the national education standards.

工程师调整了机器的部件以确保它们正确配合工作。

The engineer ___aligned the machine parts to ensure they work together properly.