need to 需要
need do，need是做情态动词 ，后跟动词原形；need to do 需要做某事 ，主语往往是人
We need to collect the parcel before we leave for England．
去英国之前，我们需要收拾好行李。
We need to tell him the truth．
我们需要告诉他真相。

It's dull.这无聊的。
It's a dull job, I prefer one with more challenge.
这工作很乏味，我较喜欢富挑战性的。
It's too dull to stay at home all day long. Let's go out for a walk in the square.
整天呆在家里太闷了。咱们出去到广场上走走吧。

tension 紧张，不安; 紧张气氛; [物]张力，拉力; 矛盾
This helps retain dramatic tension.
这样有助于保持戏剧张力。
But that idea fuels tension between palestinians.
但这一建议反而激起了巴勒斯坦内部的紧张局势。