失去联系的英文：
lost touch with

参考例句：

Lose track of; lose trace of
失去联系;没有..的讯息

Lost track
失去联系

Lose track
失去联系;不知所在

Lose sight of; forget
忘记;忽略;看不见;失去联系

If we correspond regularly we shan't lose been out of touch for years.
若我们常通信，就不会失去联系。

He is mobile from one address to another,so we often lose communication with him.
他常常变更住址，导致我们经常与他失去联系。

Ten minutes later, the probe will slip behind Mars and go silent
10分钟以后，探测器将会进入火星背向地球的位置，与地球失去联系。

lost是什么意思：
adj. 迷路的；丢失的；丧失的；错过的
v. [lose] 的过去式和过去分词形式

I'm lost as a light is lost in light.
我如同灯盏迷失在光明里。

The lost ring was never found.
遗失的戒指再也没有找到。

The motion was lost by a majority of two.
动议以两票之差被否决了。

lost bird | miss | to miss
未中| 未中靶

You cannot be lost on a straight road
走直路,不迷途

touch是什么意思：
v. 触摸；轻碰；照管；达到；比得上；尝；用；破坏；涉及；影响到；触动
n. 触碰；触感；手法，风格；润色；修饰；少许；接触

within touch of
在￥能达到的地方|在￥的附近|可以接近的|可以做到的

Finishing touches
收尾工作

You'll have to get in touch with the boss.
你必须同经理联系。

See you later. Keep in touch.
再见。记得联系哦。

touch at three port
(船)短暂停靠三个港口