adj. 有用的,有益的,有幫助的;令人滿意的;
?? use用+ful可…的” →有用的
"The memory expansion cards are useful adjuncts to the computer."
內存擴充卡是計算機很有用的附件。
近義:helpful, assistive, available, profitable, purposive, serviceable
反義:idle, inane, ineffective, insignificant, lousy, needless
n. 發送, 派遣, 發射, 信件, 神賜, 天降\\n[計] 發送
近義:remission, shipment, dispatch, remittent