useful
adj
1 that can be used for some practical purpose; serviceable or helpful 实用的; 适用的; 有用的; 有益的; 有帮助的
a useful gadget, book, hint, acquaintance 有用的小机械、 书、 线索、 熟人
do sth useful with one's life 尽自己毕生精力做些有益的事
Videos are useful things to have in the classroom. 教室里有录像设备是很有助益的.
2 (infml 口) competent or capable 能干的; 有能力的
He's a useful member of the team. 他是该队的主力队员.
3 (idm 习语) come in handy/useful => handy. ,make oneself `useful help by performing useful tasks 做些有用的事来帮忙
My nephews tried to make themselves useful about the house. 我的侄子都想帮我收拾收拾房子.
You were very kind. You brought out all your jewellery and you told me I could take anything I wanted. There were so many beautiful things that it was hard to choose. And then I saw a lovely diamond necklace with a big blue stone in the centre.
shelln. (贝、卵、坚果等的)壳;外壳;炮弹;(人的)表面性格;
vt. 去壳,脱落;炮击;
vi. 剥皮;炮轰;
washvt. 洗,清洗;浸湿;冲刷,冲击;洗去罪名;
vi. 耐洗;被洗掉(通常与 out 和 away 连用);(波涛等)拍打;
n. (尤指船过后划出的)水流;要洗的衣物的数量;薄涂层(尤指涂料);
vt. 弄湿;使受洗礼;(光)布满;(猫等)舔净(自身);
adj. 可洗的,耐洗的;(证券交易)虚假的;