1. 茎;秆;柄;梗
    The stalk of a flower, leaf, or fruit is the thin part that joins it to the plant or tree.

    e.g. A single pale blue flower grows up from each joint on a long stalk.
           一条长长的茎秆的每个节上都会长出一朵浅蓝色的花。
    e.g. ...corn stalks.
           玉米秆

2. 悄悄跟踪(敌人或野兽)
    If you stalk a person or a wild animal, you follow them quietly in order to kill them, catch them, or observe them carefully.

    e.g. He stalks his victims like a hunter after a deer.
           他像猎手跟踪鹿一样悄悄跟踪受害人。

3. 跟踪骚扰，不断纠缠(名人、分手恋人等)
    If someone stalks someone else, especially a famous person or a person they used to have a relationship with, they keep following them or contacting them in an annoying and frightening way.

stalk

    e.g. Even after their divorce he continued to stalk and threaten her.
           即使在离婚后他仍继续纠缠和威胁她。

4. 高视阔步;怒气冲冲地走
    If you stalk somewhere, you walk there in a stiff, proud, or angry way.

    e.g. If his patience is tried at meetings he has been known to stalk out.
           大家都知道如果他在会议上失去耐心，便会愤怒离席。

5. (死亡、恐惧、罪恶等)笼罩，蔓延，肆虐
    If you say that something bad such as death, fear, or evil stalks a place, you mean it is there.

stalk的反义词

    e.g. The spectre of neo-fascism, as he put it, was stalking the streets of Sofia and other big cities.
           用他的话来说，新法西斯主义的幽灵正在索非亚和其他大城市中游荡。