distribution through a year的用法和樣例：
例句
- Howeer, optimal iral ector deliery into the brain is challenging and brain distribution of iral ectors is uncertain.
然而，最佳的導入入腦的病毒載體仍需探索，病毒載體的腦內分佈也不確定。 - Having no pattern in the cardiac muscles,their distribution was often found in the myocardial layers,and occassionally under the epicardium.
在心肌內分佈無規律，多見於心肌層，也偶見於心外膜下。
