alertness

过去分词：

动词过去分词: alerted

更多词形：

动词过去式: alerted | 动词过去分词: alerted | 动词现在分词: alerting | 动词第三人称单数: alerts |

单词例句：

Be sure to be watchful or alert.

必须留神，千万要提防。

They also increase alertness and energy.

它们也能提高机敏性和精力。

Without Alertness I'll be stupid.

没有机敏那是愚蠢。

Although he's over eighty his mind is still remarkably alert.

他虽已年过八十，但头脑仍然十分机敏。

The city must be on the alert for being polluted.

城市要防止污染。

We should stand by on a hurricane alert .

在暴风雨警戒期间我们应加戒备。

DMAE is also credited with increased alertness.

DMAE同时具有使人更清醒的功效。

Fear brings about a heightened state of alertness.

恐惧使得人们提高了警惕程度。

Emily is a Londoner born and bred and, for a woman some years past the allotted span, of a truly remarkable vigour and alertness.

埃米莉生在伦敦长在伦敦，虽已年逾古稀，但实在令人惊讶的是，她仍精力充沛，耳聪目明。