Eng

Necessary...

必

Certainly, Must, Necessary, Will

要

Ask for, Blackmail, Brief, Coerce, Demand, Engage, Essential, Examine, If, Important, In case, Investigate, Invite, Make an, Midriff, Necessary, Necessity, Need, Ought to, Require, Shall, Should, Stop, Summarize, Summary, Threaten, Waist, Want, Will

所需的

All necessary, All needed, All required, Necessary, Needed, Required

(Needs, Requirements)

必要

Necessary

必要的

Necessary

(Ordered, Wanted)

十分必要

Essential, Necessary

(Complete, Completely)