1、commitment
信奉;忠誠
commitment to the ideals of Bolshevism.
對布爾什維克主義理想的信奉
承諾;責任;義務
I've got a lot of commitments.
我承擔了很多責任。
Work commitments forced her to uproot herself and her son from Reykjavik.
她的工作迫使她和兒子從雷克雅未克搬走。
承諾;許諾
We made a commitment to keep working together.
我們承諾繼續合作。
They made a commitment to peace.
他們承諾要維護和平。
2、extend
延伸;伸展
The caves extend for some 18 kilometres.
那些洞穴深約18公里。
The main stem will extend to around 12ft, if left to develop naturally.
如果任其自然生長，主干可以長到約12英尺。
持續;延續
a playing career in first-class cricket that extended from 1894 to 1920.
從1894年延續至1920年的板球甲級比賽職業生涯
The courses are based on a weekly two-hour class, extending over a period of 25 weeks.
這些課程每周上一節課，每節兩個小時，持續25周。
（設備、家具等）展開，伸展
a table which extends to accommodate extra guests.
展開后可坐更多客人的桌子
The table extends to 220cm.
桌子伸展后長220厘米。