🧩 词语组成解析
slide
[slaɪd]
vi. 滑落;下跌;打滑;[棒球]滑垒;
vt. 衰落（成）;逐渐降低;使悄悄转动;（使）快捷而悄声地移动;
n. 幻灯片;降低;
by
[baɪ]
prep. 在…旁边;表示方式;由于;经过;
adv. 经过;表示保留或保存时用;短暂拜访;
🗣️ 情景例句
The old couple has already been married for fifty years.
那对老夫妻结婚已经 50 年了。
Nothing is difficult to a man who wills.
世上无难事，只怕有心人。
let alone distances of tens or hundreds of light years.
更不用说几十光年或几百光年远的地方了。