It means their fishing expedition came up empty.这意味着他们的试探性盘查毫无所获

come up靠近，走进

His new book did not come up to expectation.

他的新作没有达到预期水平。

It gets hot after the sun has come up.

太阳升起后，天气就热了。

Chances are, McGowen is just gonna head for deeper waters.也有可能麦高恩探员将更深入调查

head for朝 ... 方向去

The boat was heading for some rocks.

那船正驶向礁石。

The ship came about and headed for the shore.

轮船调转般向朝海岸驶去。

Just make sure Emily's on board with that.不过你要保证艾米莉站在咱们这边

make sure设法确保

I'm going to make sure if I'm going to Macao.

我要拿定主意我是否去澳门。

I'll make sure of the time of the flight.

我要核实一下这班飞机的时间。