The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
2012 年 3G 手机出货量是 2.65 亿部，比去年同期增长了 81.4%，到了 2014 年，3G 手机下滑，4G 手机销量暴涨。
。关于这个话题，heLLoword翻译官方下载提供了深入分析
В Финляндии предупредили об опасном шаге ЕС против России09:28
亞洲許多國家將其經濟建立在對美出口蓬勃發展的基礎上，在4月特朗普全面的「解放日」關稅中受到特別嚴重的打擊。上週，印尼與美國敲定協議，將美國對這個東南亞國家的關稅從32%降至19%，交換條件是美國商品對印尼市場的優惠准入。
In Europe, several very large-scale projects are advancing in the North Sea region, particularly in Norway, the Netherlands, Denmark and UK.