The boat that now arrived, assured by the answering signal that all was well, soon came in sight, white and silent as a phantom, and cast anchor within a cable's length of shore.

那艘帆船还是等在外面，在观察回答的信号究竟对不对，不久，它就静悄悄地驶近了，只见白朦朦的一片，象是一个幽灵似的，在离岸一箭路以外抛了锚。

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The plant detects the substance and activates an internal signal that causes it to lose its green colour, turning its leaves white.

当植物监测到那些有害物品时就会激发内信号，使叶子从绿色变成白色。

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Ana Wisneski of the U.S. Coast Guard. Bring plenty of water to drink, sun protection, a flashlight, vital medications, and white sheets or colorful towels to signal rescuers.

带上足够喝的水、防晒用品、手电、救命药、白色床单或者颜色鲜艳的毛巾作为求救信号。

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What sort of signal is the White House sending to the United Nations?

NPR: Politics with Ron Elving: Bolton, Iraq

Ms. White sends "a tough signal to the markets, " Mr. Heim said.

WSJ: Writing on the Wall: What Can Help Restore Investor Trust? Maybe the SEC

So too, going solar on the White House would send a signal that would be heard not only throughout the nation and the world.

FORBES: Mr President, Bo Getting Solar Doesn't Keep Your Promise: Please Put It On The White House