Okay, let's practise be verb contractions with you after me.

好的，跟着我一起练习动词缩写吧。

The end-systolic volume is defined as the amount of blood remaining in the ventricles after contraction.

收缩末期容积定义为收缩后残留在心室中的血液量。

The amount of blood remaining in the ventricles after contraction is known as the end-systolic volume.

心室收缩后剩余的血液量称为收缩末期容积。

But, no matter how strong the ventricles contract, there's always some blood left in the ventricles after contraction.

但是，不管心室收缩得有多厉害，收缩后心室里总会残留一些血液。

This amount of blood remaining in the ventricles after contraction is known as the end-systolic volume.

收缩后残留在心室中的血液量称为收缩末期容积。

No matter how strong the ventricles contract, there's always some blood left in the ventricles after contraction.

不管心室收缩得多厉害，收缩后总有一些血液留在心室里。

Starting anywhere from two to twenty days after contraction, initial symptoms like high temperature, aching, and sore throat resemble those of a typical flu, but quickly escalate to vomiting, rashes, and diarrhea.

被感染后的二到二十天后，最初的症状出现包括高热，身体疼痛，以及喉咙痛，这与典型流感相似，但症状迅速加剧至呕吐，红疹和腹泻。