He heard his heart thump dully but more quickly.他听见低沉的心跳声，跳动的速度却更快了。There was a loud thump as the horse crashed into the van.马撞在货车上发出砰的一声巨响。The plank fell on the ground with a thump.砰的一声,木板倒下来了.The dog let his head thump...
There was a loud thump as the horse crashed into the van.马撞在货车上发出砰的一声巨响。Don't say it serves me right or I'll thump you.别说我活该，不然让你尝尝我的拳头。The dog let his head thump on the floor again.那只狗又用头撞地板。...
某些病毒的核衣壳是由被膜所包绕.In some viruses the nucleocapsid is surrounded by an envelope.溶酶体也为膜所包绕,含有分解某些大分子的酶.Lysosomes are also membrane bound and they contain the enzymes concerned with the breakdown of macromolecules.心脏被一种叫做心包的...