Bicommutant
对换位阵
🗣️ 情景例句
He sees her often but doesn't want to get too involved.
他常与她来往，但不愿用情太深。
These pills can be obtained by prescription only.
这些药丸只有凭医生处方才能买到。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。