Ajax
创建交互式 Web 应用程序而无需牺牲浏览器兼容性的流行方法（Asynchronous JavaScript and XML）；爵士白；铅青铜轴承合金
🗣️ 情景例句
I know you are.
我知道你是。
You are older than I am.
你比我年老。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。