1.war on sb. 对某人宣战
The king was prepared to levy war on his neighbour after their quarrel over the land.
在与领国发生了领土纠纷后，国王已经准备好对邻国宣战了#sy@8&D+.xxVo。

2.be locked in battle 相持不下
In the dark and violent world of feudal Japan, two brothers are bound by blood, yet locked in battle for the title of Shogun king.
在封建时代的日本，黑暗和暴力笼罩大地!XSX~]Uz5fN7Qc4G]。为了争夺将军头衔，原本血脉相连的两兄弟不禁反目成仇，打得是难解难分#Zw)(i_V%z#n&AKLoXCi。

3.haggle over 讨价还价
If you come with me to the market, you must be prepared to haggle over the prices asked.
你要跟我去市场的话，得准备好讨价还价.exKssPsM|zr(x。

4.home in on sth. 锁定
Strangely, sharks do not seem to use these senses to home in on people.
奇怪的是，鲨鱼似乎不用这些器官来锁定人类进行袭击ZBiRPas]~J~*VsKV。