Thecompanymaybereluctanttodeviatetoofarfromthebasictermsofthisagreement,butthereareanumberofthingswhichare_________________(可协商的,可讨论的).
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Most travel is __________ (确实无疑地,显然;坚决地,果断地) optional.
Withthepopulationofthisfascinatingandlovablepandaclosetoextinction,anyeffortto_____________(使稳定,稳固)thespeciesmustbeworthwhile.
Hewouldneverunderstandhowshecould_______________(记忆,记住)allthosecomplex,impossiblylongpoems,yetforgetthewordsofasimplesongshemusthaveheardathousandtimesormore.
This is traveling, a __________ (令人烦恼的,成为负担的) series of running and waiting, and after countless hours, finally getting there.