So silent and constant is the presence of the sea that I may go most of a day without observing it, or even registering that it is there.

大海是如此长久地沉默着，使得我一天中的大部分时间都没有注意观察它，或是甚至没有留意到它就在那儿。

youdao

Emulsified diesel fuel was tested in the presence of demulsifier, Observing the effects of various factors, the advanced process condition was defined.

对乳化柴油进行破乳试验，考察了各种影响因素，确定了最佳的工艺条件。

youdao

Those who had continued their courtship in the presence of the paper again proved their courage and often kept fighting until the observing human was just two metres away.

ECONOMIST: Animal personalities