四点

Bring the children back from the kindergarten at four o'clock.

下午把孩子们从幼儿园接回来。

From 8 a.m. to 4 a.m. the suburban buses leave every hour on the hour.

"从早上八下午,近郊的公共汽车每小时正开出一班。"

I had a cup of tea and a bun at four o'clock.

钟时喝了一杯茶, 吃了个小甜面包。

He arrived punctually at four o’clock.

他钟准时达。

It took us two hours to complete the calculation, so we logged off at 4 o'clock.

们花了两个小时才完成计算, 因而是结束工作的。

I have listed four reasons below.

列出原因如下。

30 p.m;a p.m.appointment.See Usage Note at ante meridiem

从早上八下午,近郊的公共汽车每小时正开出一班。

Be here by four o'clock.

钟这儿。

At 16:00, they also need to take the land power training at “May Fourth palaestra” or “The Second palaestra”.

下午，他们还需要五体育场或二体进行陆上力量的训练。

As compared with the hybrid tracking and the coplane four-point registration algorithms, the proposed algorithm is of higher registration accuracy.

与混合跟踪注册算法、共面注册算法相比，文中方法具有更高的精度。

Heat treatment and pre-strain, tensile test of the material and four point bending test have been carried to obtain the mechanical property of the undegraded and degraded material at low temperature.

本文首先通过分析复合脆化处理实验、拉伸实验和缺口试件弯曲实验的结果，考察比较某核压力容器钢脆化处理后的室温和低温力学性能。