When two or more elements combine and form a compound, a chemical change takes place.当两种或两种以上的元素结合形成化合物时, 发生化学变化。Dinucleotide A compound of two nucleotides linked by their phosphate groups.二核苷酸:由磷酸基团连接的两个核苷酸组成的化合物.Magnes...
Police fired on them as they fled into the embassy compound.当他们逃进使馆大院时,警察向他们开了枪。The less stable compounds were converted into a compound called Delta-A THC.不太稳定的化合物被转换成了一种叫做Delta-ATHC的化合物。This sticky compound adheres wel...
He's hoping that if he makes me feel guilty, I'll retract.他指望着如果他能让我感到内疚,我就会收回所说的话。A cat can retract its claws, but a dog can’t.猫的爪子可以缩进去, 但狗不能。A cat can retract its claws, but a dog can't.猫的爪子可以缩进去, 但狗不能....