Seim
abbr. simple effective index method 简单有效折射率法
🗣️ 情景例句
Peak hour traffie like this make traveling to work a real drag.
像这样的交通高峰期使得乘车上班非常缓慢。
Buck up, Billy, Enjoy yourself.
振作起来，比利，快快活活地过日子。
To do this, he must be at least as knowledgeable as the dealer.
要做到这一点，他至少要像古董商一样懂行。