stem和stalk有什么不同?

stem:[ stem ]
n.茎,干,船首
v.堵住,阻止,起源于
词形变化:
动词过去式:stemmed 过去分词:stemmed 现在分词:stemming 第三人称单数:stems
例句与用法:
1.Our ship stemmed on against the current.
我们的船逆流而上.
2.She bought some roses with long stems.
她买了一些枝干很长的玫瑰花.
3.The liner has been refitted from stem to stern.
那艘班轮已经全面整修.
4.A slight curving or circular movement in a stem,as of a twining plant,caused by irregular growth rates of different parts.
转头运动植物茎的轻微弯曲或扭转的生长,象双生树那样,由不同部分的不规则生长速度引起
5.She sat twirling the stem of the glass in her fingers.
她坐在那里用手指捻著玻璃杯的杯颈.
名词stem:
1.(linguistics) the form of a word after all affixes are removed
同义词：root,root word,base,theme,radical
2.a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
同义词：stalk
3.cylinder forming a long narrow part of something
同义词：shank
4.the tube of a tobacco pipe
5.front part of a vessel or aircraft
同义词：bow,fore,prow
6.a turn made in skiing; the back of one ski is forced outward and the other ski is brought parallel to it
同义词：stem turn
动词stem:
1.grow out of,have roots in,originate in
2.cause to point inward
3.stop the flow of a liquid
同义词：stanch,staunch,halt
4.remove the stem from
stalk:[ stɔ:k ]
n.茎,追踪,高视阔步
v.悄悄靠近,蔓延,高视阔步
词形变化:
形容词:stalky 名词:stalker 动词过去式:stalked 过去分词:stalked 现在分词:stalking 第三人称单数:stalks
例句与用法:
1.The infatuated fan stalked the celebrity.
那位着了迷的崇拜者追踪这位名人.
2.He cut off the flowers at the stalk with a pair of scissors.
他用剪子连花带茎都剪下来.
3.He moved like a tiger stalking its prey.
他像老虎一样悄悄潜近他的猎物.
4.He stalked angrily out of the room.
他悻悻然踱出了房间.
5.Fear stalks (through) the town at night.
入夜后,镇上笼罩著恐怖的气氛.
6.Remove the stalks from the cherries before you eat them.
吃樱桃前要先把梗儿去掉.
7.Ghosts are said to stalk the castle walls.
据说有鬼魂在这座城堡的墙上出没.
名词stalk:
1.material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds
同义词：chaff,husk,shuck,straw,stubble
2.a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
同义词：stem
3.a hunt for game carried on by following it stealthily or waiting in ambush
同义词：stalking,still hunt
4.the act of following prey stealthily
同义词：stalking
5.a stiff or threatening gait
同义词：angry walk
动词stalk:
1.walk stiffly
2.follow stealthily or recur constantly and spontaneously to
同义词：haunt
3.go through (an area) in search of prey