Sieve tubes
[医] 筛管
🧩 词语组成解析
sieve
[sɪv]
n. [粮食][矿]筛子;滤网;不能保守秘密的人，嘴不严的人;
v. 筛，筛选;滤;
n. 管子, 导管；管状虫；伦敦地铁（tube的复数）
🗣️ 情景例句
but now what?
但下一步怎么办？
His wife died a year ago. Now he lives alone.
他妻子去年去世了。现在他一个人住。
That's the trouble, vicar,' answered Bill.
“问题就在这里，牧师，”比尔回答说。