二芳基氮氧化物自由基比二烷基氮氧化物自由基还要稳定.Diaryl nitroxides are even more stable than the dialkyl nitroxides.这种反应构成了制备芳基环丙基乙炔的有效方法.This sequence constitutes an efficient method for preparing arylcyclopropylacetylenes.例如芳基二硫化物可抑制聚烯烃的氧化.A...
鲜艳的红色和粉色的天竺葵从我家的阳台上直挂下去。Vivid red and pink geraniums cascade over my balcony.这是天竺葵和矮牵牛盛开的时节。This is when geraniums and petunias come into their own.柠檬天竺葵枝条底部棕色的枯叶会脱落。The lemon geranium sloughs dry brown leaves at the bas...
Herrings can be salted, smoked and pickled.鲱鱼可以盐腌、熏制和泡制。The audience jammed in the hall like herrings in a barrel.听众把大厅挤得水泄不通.We are the more like a barrel of herrings.我们挤得像桶里装满了的鲱鱼....
成功无法保证，并非唾手可得。成功必须靠自己去争取。Success is not guaranteed. It is not handed to you. Success is earned.他14岁起就知道自己日后干什么了。He knew what he wanted to do from the age of 14.她重振旗鼓去开创自己的事业了。She dusted herself down and left to build her...
The purchase of specialist equipment may be uneconomic or insufficiently flexible.购买专家设备可能是浪费或者不够灵活.The flexible twining or climbing stem of certain plants, such as the hop, woodbine, or bindweed.细长柔韧的枝或嫩条(尤指柳或一些藤茎植物), 用...
It was unkind to denigrate her achievement.贬低她的成就是刻薄的.A right easterly wind is very unkind.风起正东,定是恶风.Don’t harbour unkind thoughts.不要心怀不轨。Don't you think it's a little unkind to gloat over your competitor'...