You don't have to shout. He can hear you
必要───necessary;喊───shout
I'll make the necessary arrangements.───我会做一些必要的安排。
If necessary I can come at once.───如果有必要，我可以马上来。
Military action may become necessary.───军事行动可能会成为必要。
Even if you can't eat like a health nut all the time, at least you'll get most of your necessary vitamins with the help of a supplement.───即使你不能像一个很注重养生的人一样时时都吃维生素，至少也用通过补充获取大部分必要的维生素。
Consequently, a third test was necessary to see if these abilities could have been learned.───因此，有必要再进行一项实验，观察这些能力能否通过后天学习取得。
Even after he had completely abjured violence he was honest enough to see that in war it is usually necessary to take sides.───即使在他发誓彻底放弃暴力后，他也诚实地明白在战争中经常必须要选择一方。
Knowledge is a comfortable and necessary retreat and shelter for us in an advanced age; and if we do not plant it when young, it will give us no shade when we grow old.
My money came short of the necessary sum.
It is necessary to keep these two issues distinct.
You can slide the front seats forward if necessary.
Attractive label is very necessary.