stem的过去式是什么?stem的用法和例句

stem有茎;高脚杯的脚;烟斗柄;词干;等意思，那么你知道stem的过去式是什么吗?下面一起来学习一下stem的过去式以及stem的用法和例句，希望对大家的学习有所帮助!

stem的过去式及其它时态

stem的过去式:stemmed

stem的复数:stems

stem过去分词:stemmed

stem现在分词:stemming

stem第三人称单数:stems

stem的用法和例句

1、He was still conscious, trying to stem the bleeding with his right hand.

他依然清醒，正试图用右手止血。

2、The stinging nettle has a square stem and little hairs.

荨麻长有四方茎和细小茸毛。

3、Make a slit in the stem about half an inch long.

在树干上切一道大约半英寸长的口子。

4、A South African television report said the ship was ablaze from stem to stern.

南非一则电视新闻报道称，那艘船从头到尾都着了火。

5、They searched the ship from stem to stern , looking for the missing suitcase.

他们对船进行了彻底的搜索, 寻找那只遗失的手提箱.

6、I've read the book from stem to stern.

这本书我已从头至尾读完.

7、There are two types of stem growth habit and floral initiation in soybean.

大豆茎生长习性和花的发生有两种类型.

8、The administration is trying to stem the flood of refugees out of Haiti and into Florida.

政府当局正试图阻止大批难民逃离海地，进入佛罗里达。

9、The stem of the mushroom is broken.

这只蘑菇的梗折断了.

10、Twist the string carefully around the second stem with the other hand.

用另外一只手小心地把细绳缠绕到第二根茎上。