Trelat sign
[医] 特雷拉氏征(口部结核性溃疡的黄点)
🧩 词语组成解析
🗣️ 情景例句
for a long time,
很久了，
Measures should be taken to reinforce the cartons.
应采取措施加固纸箱。
Once he had done this, he had been able to turn on the supply.
一旦他接上了接头，他就能够打开供气阀。