Total concentration is required with no distractions.

需要全神贯注，不可有分心之事。

Listening well requires total concentration upon someone else.

认真聆听需要完全专注于他人。

Skiing at 80 miles per hour requires total concentration.

每小时80英里的滑雪需要完全专注。

We do not need a takeover, we need total concentration of football matters.

我们不需要被收购，我们需要全力集中到足球本身上来。

Salinity refers to the total concentration of salts present in the soil solution.

含盐量是指土壤溶液中所存在的盐类的总浓度。