// 栈空 → 无更大元素，返回-1；栈非空 → 取栈顶（第一个更大值）
"It's been investigated for many years," says Read, acknowledging that elastomers have yet to revolutionise actuator tech. "Often with these technologies, you have to keep pushing."
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实施扣押前应当报经公安机关负责人批准；因情况紧急或者物品价值不大，当场实施扣押的，人民警察应当及时向其所属公安机关负责人报告，并补办批准手续。公安机关负责人认为不应当扣押的，应当立即解除。当场实施扣押的，应当全程同步录音录像。
The leaked police log shows that, at 12:40, Peter 1 issued the order allowing the use of lethal fire.