directional dependence

• 方向依赖性

directional dependence的用法和样例：

例句

1. Often inject can tranquillizer produce dependence?
   经常注射镇静剂会不会产生依赖性？
2. Dependence on air and sea ports of debarkation would be reduced.
   对卸载机场和登陆港口的依赖性将会降低。