haven't; hasn't; doesn't exist; to not have; to not be[cedict]
确定
què dìngㄑㄩㄝˋ ㄉㄧㄥˋ
definite; certain; fixed; to fix (on sth); to determine; to be sure; to ensure; to make certain; to ascertain; to clinch; to recognize; to confirm; OK (on computer dialog box)[cedict]
采样
cǎi yàngㄘㄞˇ ㄧㄤˋ
sampling[cedict]
来
láiㄌㄞˊ
to come; to arrive; to come round; ever since; next[cedict]