at a time

Take the pills two at a time.

每次服两粒。

He carried on several occupations at a time.

他同时从事几种职业。

The albatross can stay airborne at sea for days at a time.

信天翁在海上可以连在空中待几天。

Hold the ladder tightly and move up a rung at a time.

抓紧梯子往上爬。

To be safe you should go up a ladder one rung at a time.

为安全起见, 登梯子时你应该步步往上爬。

Suber flushes early and pupas are already found at a time when the caterpillars on ilex are just hatching.

栓皮栎发叶早，当常绿上幼菌虫还处在孵化阶段时，栓皮栎上已成了蛹。

At a time when the trend of “corpse-art” was the main tendency, Gao Feng’s performance was indeed filled with gentle and humoristic tones.

在当时“尸派”艺术颇为年代，高风这件为作品倒显得有些温柔和幽默。

On Monday they even tested a backup procedure—canting the shovel at the end of the probe's robotic arm and shaking it to dribble soil a bit at a time.

周他们甚至尝试了种替代方法，即将探针机器手尾部铲子倾斜来次弄下点土壤。