疾步的英文：
a tearing pace

参考例句：

The troops were going forward quickly.
部队在疾步行军。

He walked off quickly round the parapet
他沿着胸墙疾步走开。

He heard a horse approaching at a spanking trot.
他听到一匹马正在疾步驰近。

tearing是什么意思：
n. 眼泪；撕扯；洞或裂缝；疾驰
v. 流泪；撕掉；扰乱

My old pants have a tear.
我的旧裤子上有一个裂口。

The accident unlocked a flood of tears.
这个意外让他的眼泪流了出来。

Tears well in her eyes.
她的眼中涌出了泪水。

Her eyes glistened with tears.
她眼中的泪水在闪烁。

Those are mimic tears.
那眼泪是假的。

pace是什么意思：
n. 步调；节奏；步速；一步
v. 缓慢而行；踱步

Coma paced around the lounge.
柯玛在起居室里踱来踱去。

There is no reason to believe that this pace will slacken.
没有理由认为这个速度会下降。

You keep pacing back and forth.
你一直在来回踱步。

They have to proceed at a measured pace.
他们不得不小心谨慎地继续前进。

Our pace is corresponding to the opportunities.
我们的步伐与机遇是一致的。