实际上，某些面料底边最好是免烫的，先用一小块面料试验一下。
Some hems in FACT are better left undressed. Experiment with pieces of fabric first.
圆锥体大概是最先用来传递声音的工具，也是最好用的工具了。
The cone is probably the first and best idea in sound delivery.
圆锥体大概是最先用来传递声音的工具，也是最好用的工具了。
The cone is probably the first and best idea in sound delivery.
应用推荐