American architecture is at its best when it is concerned with buildings that have a practical purpose . 美国建筑业的最大成功之处在于建筑实用的高楼。
When practical solar cells came on the scene in the 1950s the nuclear age was just beginning . 当实用的太阳电池在五十年代出现时，原子核时代刚刚开始。
So it is used instead to calibrate more practical current-measuring instrument, called ammeters . 因此，它只用于校准更实用的测量电流的仪表安培计。
The healing art belongs to the realm of the practical, which in the united states is a great recommendation . 医疗属于实用的领域，而美国人是极崇尚实际的。
The new collections of custom furs around town reveal plenty of folderol , but there are practical things too . 市上大批新的定做的皮衣中有许多是华而不实的，但也有一些实用的东西。
By 1908, even the most doubtful scientists were convinced that a practical flying machine was a reality . 到了1908年，即使最持怀疑态度的科学家也相信，一种实用的飞行器已经成为现实了。
The notation is essential for the practical application of a book classification scheme, and offers many practical advantages . 标记符号对于图书分类法的实际应用极为重要，而且具有许多实用的优点。
Subjective assessment of heart size is the most practical method and is the one recommended for general use, except for the beginners . 主观判断心脏大小是最实用的方法，除初学者外可以作为一般的应用。
