Piston alloy
[机] 活塞用合金
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
alloy
['ælɔɪ]
n. 合金;（合金中的）劣等金属;搀杂品;成色;
v. 合铸，熔合（金属）;铸成合金;在…中搀以杂质，使（金属）减低成色;
al(ad-=to)+loy(to bind)→合金；杂质；贬低；损害
🗣️ 情景例句
Help! Help! I can't swim!
救命！ 救命！ 我不会游泳
Has this seat number started boarding?
这个座位号已开始登机了吗？
he is lending the bank money, repayment of which he may demand at any time,
就等于把钱借给了银行。这笔钱他可以随时提取，