Some relative clauses in the contract have to be amended owing to the unexpected situation.
由于這種難以預料的情況,合同中的有關條款不得不做些修改。
The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first.
然后記錄下的是橫向波的到達,橫向波比縱向波傳播得慢,在縱向波到達幾分鐘后才能到達。