Your site needs to have a simple, clear and effective call to action to get them moving.

你的网站需要有一个简单、明了、有效的号召，来让来访者行动起来。

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While sharp words can be an effective call for attention, perceived selfishness is a huge turn-off.

虽然激烈的话语能够引起听众的注意，但如果这被认为是以自我为中心的表现，那就得不偿失了。

youdao

Enabling tracing causes adverse effects and is not very effective under high call volume.

启用跟踪会导致不良后果，且在高调用量下也不是十分有效。

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The call for effective, polite, and spot-on service will only increase.

FORBES: 5 Stupefying Statements from the CRM Call Center (and what to do about them)

Mr Annan declined, and instead endorsed Mr Malloch Brown's call for more effective American leadership.

ECONOMIST: United Nations

In this context, the High Panel made a strong call for more effective multilateralism.

UNESCO: Irina Bokova leads the 3rd High Panel on Peace and Dialogue among Cultures | United Nations Educational, Scientific and Cultural Organization