on hand什么意思解释？

on hand的音标：on hand的英式发音音标为：[ɔn hænd]on hand的美式发音音标为：[ɑn hænd]...

Mr. Blake's secretary is always on hand when he appears in public.布雷先生在公开场合露面时,他的秘书总在场.Please be on hand at 12 sharp.请在十二点整到这里来.Give away any food you have on hand, or lock it up and give the key to the neighbours.把...

以氟化钾为催化剂, 催化十二烯基琥珀酸酐(DDSA)缩合成螺双内酯化合物.With potassium fluoride as catalyst, spironolactone compound was synthesized from DDSA....

germitron的音标：germitron的英式发音音标为：[d'ʒɜ:mɪtrən]germitron的美式发音音标为：[d'ʒɜmɪtrən]...

“悬念”的近义词/同义词：牵挂, 想念, 系念, 系累, 系缚, 顾虑, 挂念, 思念, 怀念, 记挂, 牵记, 惦念, 缅怀, 驰念, 担心, 惦记, 疑团。...

“从前”的英语可以翻译为：efore，formerly，in the past，once upon a time，aforetime ...

forefinger的复数形式为：forefingers...

adj.单倍雌雄异株的...

A servant is known by his master's absence.主人不在可以看出仆人的品行来。He is a trusted servant of the company.他是公司里可靠的雇员。That creature butters up the emperor's close servant - of all the nerve!他在巴结皇帝的近侍,真是厚颜无耻.I pray you le...

abdominal的音标：abdominal的英式发音音标为：[æb'dɒmɪnl]abdominal的美式发音音标为：[æb'dɑmɪnl]...

你还能继续雇用这两名花匠 吗 ?Are you able to keep both the gardeners on?花匠把花捆成花束.The florist bunched the flowers up.农民和花匠都知道，冬天越暖和，作物的生长季节便越长。Any farmer or gardener knows that a milder winter means a longer growing season....

n.芥末，芥菜，芥末色，深黄色，强烈的兴趣，热情的人...

“基质”的拼音为：jī zhì...

adj.疼痛的，使人伤心的，恼火的，发怒的n.（肌肤的）痛处，伤处adv.〈古，诗〉同sorely...

真革螨属一新种 ( 蜱螨亚纲: 寄螨科 )A NEW SPECIES OF THE GENUS EUGAMASUS ( ACARI: PARASITIDAE )下盾螨属和伪寄螨属的新种记述 ( 蜱螨亚纲: 革螨股: 厉螨科 )Two New Species of the Genera Hypoaspis and Pseudoparasitus ( Acari: Gamasina: Laelapidae )血革螨属一新种 ( 蜱螨亚纲: ...

n.自行式井下无轨矿车...

n.哈密尔敦函数...