cultivate
vt.耕作，栽培，养殖;培养，陶冶，发展
The land was too rocky to cultivate.这块地石头太多，无法耕作。
dubious
a.怀疑的，无把握的;有问题的，靠不住的
The firm was accused of dubious accounting practices.该公司被指控有不诚实的会计行为。
due
a.预定的;应得的;应有的;到期的
He accepted all the praise he received as his due.他接受了全部赞扬，认为受之无愧。
dull
a.乏味的;阴沉的;低沉的;笨的;钝的
Life is never dull when Elizabeth is here.伊丽莎白在这里生活就决不会无聊了。
