Introduce foods one at a time and notice if you feel uncomfortable with any of them.

He was able to spend only a few days at a time on the island.

他每次去岛上都只能呆几天。

Can I borrow two books at a time?

我可以一次借两本书 吗 ?

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.

This restaurant can accommodate two hundred people at a time.

这家餐馆可供200人同时用餐.

He tore up the stairs two steps at a time.

他一步两个台阶地飞奔跑上楼.

How much can you knock back at a time?

你一次能喝多少?

Is there room for two people at a time to pass in?

这空间是否能使两人同时进入?

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

抓紧梯子一级一级地往上爬.

I can only carry two at a time.

我一次只能带两个。

For months at a time, air raids were a nightly occurrence.

一度有几个月，每天晚上都会发生空袭。

Add the cream a few drops at a time.

每次加几滴奶油。

Niccolini was thundering up the stairs, taking them two at a time.

尼科利尼一步两个台阶地噔噔跑上楼。

I am not a country person at all. I prefer the cities.

我根本不喜欢乡村生活，我喜欢城市。

"That is beautiful, Tony," Momma said, no longer sounding at all snappish.

“真美呀，托尼，”妈妈说道，话音里的恶声恶气不见了。

Ultimately, Bismarck's revisionism scarcely affected or damaged British interests at all.

从根本上说，俾斯麦的修正主义几乎未对英国的利益造成一丝一毫的影响或损害。

He wasn't at all sure Sarah was up to that.

他一点都拿不准萨拉能否胜任。

Oftentimes, these fossils are not made available to science at all.

科学界常常压根接触不到这些化石。

Apparently the girls are not at all amused by the whole business.

据说女孩们觉得整件事情一点也不好笑。

Only here were the police visible in any strength at all.

只有在这里才能看到廖廖几个警察。