Call me when the fog set in. Sound regulation whistle, attend to echo sounding and start radar at an interval not more than 20 minutes.
下雾时要叫我，鸣放汽笛，动用测深仪，启动一次雷达不要超过20分钟。
Run into fog bank, put engine slow and whistle kept going on.
驶入雾区，令主机慢车和持续鸣笛。
Run into fog bank, put engine slow and whistle kept going on.
驶入雾区，令主机慢车和持续鸣笛。
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