Least significant digit
[計] 最小有效位
?? 詞語組成解析
least
[list]
adj. 最小的;最少的（ little的最高級）;最不重要的，地位最低的;
adv. 最少，最小;
n. 最小;最少量;
significant
[s?ɡ'n?f?k?nt]
adj. 重要的;有意義的;有重大意義的;值得注意的;
n. 有意義的事物;象征，標志;
sign記號，信號+ific產(chǎn)生…的+ant形容詞后綴→有意義的
digit
['did?it]
n. 數(shù)字;手指，足趾;一指寬;
??? 情景例句
Thank you for everything.
一切謝謝你。
It was quite good. But it was awfully long.
班機很好，就是時間太長了。
and by the time he is grown and able to take part in its activities,
等他長大了，能做各種事了