at a time

1.Take the pills two ss="key">at a time.

每次服两粒。

2.He carried on several occuplass="key">ations at a time.

他同时从事几种职业。

3.The albatross can stay airborne at sea for days ss="key">at a time.

信天翁在海可以一连在空中待几天。

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

抓紧梯子一级一级地。

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

安全起见, 登梯子时你应该一步一步。

6.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，当常绿的幼菌虫还处在孵化阶段时，栓皮栎的已成了蛹。

7.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”艺盛行的年代，高风的这件行作品倒显得有些温柔和幽默。

8.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 ss="key">at a time.

周一他们甚至尝试了一种替代方法，即将探针的机器手尾部的铲子倾斜来一次弄下一点土壤。